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<!-- Creation date: 2013-02-15T21:12:02Z -->
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        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.quinstreet.com/taxonomy/role/DisclosureSubsequentEventAdditionalInformation" id="DisclosureSubsequentEventAdditionalInformation">
        <link:definition>151 - Disclosure - Subsequent Event - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:href="qnst-20121231_cal.xml" xlink:title="Calculation Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:href="qnst-20121231_def.xml" xlink:title="Definition Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:href="qnst-20121231_lab.xml" xlink:title="Label Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:href="qnst-20121231_pre.xml" xlink:title="Presentation Links, all"/>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <import namespace="http://fasb.org/us-types/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-types-2012-01-31.xsd"/>
  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
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  <import namespace="http://fasb.org/us-gaap/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/country/2012-01-31" schemaLocation="http://xbrl.sec.gov/country/2012/country-2012-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/dei/2012-01-31" schemaLocation="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/invest/2012-01-31" schemaLocation="http://xbrl.sec.gov/invest/2012/invest-2012-01-31.xsd"/>
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  <element name="DebtInstrumentImputedInterestAndUnamortizedDiscount" id="qnst_DebtInstrumentImputedInterestAndUnamortizedDiscount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureCommitmentsAndContingenciesScheduleOfFutureAnnualMinimumLeasePaymentsUnderNoncancelableOperatingLeasesAbstract" id="qnst_DisclosureCommitmentsAndContingenciesScheduleOfFutureAnnualMinimumLeasePaymentsUnderNoncancelableOperatingLeasesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureDebtAdditionalInformationAbstract" id="qnst_DisclosureDebtAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureFairValueMeasurementsAndMarketableSecuritiesScheduleOfCompanysFinancialInstrumentsAbstract" id="qnst_DisclosureFairValueMeasurementsAndMarketableSecuritiesScheduleOfCompanysFinancialInstrumentsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureFairValueMeasurementsAndMarketableSecuritiesScheduleOfUnrealizedGainsAndLossesRelatedToAvailableForSaleSecuritiesAbstract" id="qnst_DisclosureFairValueMeasurementsAndMarketableSecuritiesScheduleOfUnrealizedGainsAndLossesRelatedToAvailableForSaleSecuritiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureIntangibleAssetsNetAndGoodwillAmortizationExpenseAbstract" id="qnst_DisclosureIntangibleAssetsNetAndGoodwillAmortizationExpenseAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureIntangibleAssetsNetAndGoodwillChangeInCarryingAmountOfGoodwillAbstract" id="qnst_DisclosureIntangibleAssetsNetAndGoodwillChangeInCarryingAmountOfGoodwillAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureIntangibleAssetsNetAndGoodwillIntangibleAssetsAbstract" id="qnst_DisclosureIntangibleAssetsNetAndGoodwillIntangibleAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureIntangiblesAssetsNetAndGoodwillAdditionalInformationAbstract" id="qnst_DisclosureIntangiblesAssetsNetAndGoodwillAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureNetLossIncomeAttributableToCommonStockholdersAndNetLossIncomePerShareCalculationOfBasicAndDilutedNetIncomePerShareAbstract" id="qnst_DisclosureNetLossIncomeAttributableToCommonStockholdersAndNetLossIncomePerShareCalculationOfBasicAndDilutedNetIncomePerShareAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureSegmentInformationNetRevenueAndLongLivedAssetsByGeographicAreaAbstract" id="qnst_DisclosureSegmentInformationNetRevenueAndLongLivedAssetsByGeographicAreaAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureSegmentInformationSummarizedInformationBySegmentAbstract" id="qnst_DisclosureSegmentInformationSummarizedInformationBySegmentAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureStockBenefitPlansAdditionalInformationAbstract" id="qnst_DisclosureStockBenefitPlansAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureStockBenefitPlanScheduleOfWeightedAverageBlackScholesModelAssumptionsAndWeightedAverageGrantDateFairValueOfEmployeeStockOptionsAbstract" id="qnst_DisclosureStockBenefitPlanScheduleOfWeightedAverageBlackScholesModelAssumptionsAndWeightedAverageGrantDateFairValueOfEmployeeStockOptionsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureStockholdersEquityAdditionalInformationAbstract" id="qnst_DisclosureStockholdersEquityAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationAbstract" id="qnst_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="EstimateUsefulLifeOfGoodwill" id="qnst_EstimateUsefulLifeOfGoodwill" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ExpectedAmortizationExpenseLineItems" id="qnst_ExpectedAmortizationExpenseLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ExpectedAmortizationExpenseTable" id="qnst_ExpectedAmortizationExpenseTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
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  <element name="IncrementalCommonSharesAttributableToStockOptions" id="qnst_IncrementalCommonSharesAttributableToStockOptions" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="LettersOfCreditForOperatingLease" id="qnst_LettersOfCreditForOperatingLease" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="MaximumPercentageOfRevenueRepresentedByAnyCustomer" id="qnst_MaximumPercentageOfRevenueRepresentedByAnyCustomer" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="MunicipalSecuritiesMember" id="qnst_MunicipalSecuritiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="PercentageOfAmortizationWithPrincipalOfCreditFacilityYearFour" id="qnst_PercentageOfAmortizationWithPrincipalOfCreditFacilityYearFour" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="PercentageOfAmortizationWithPrincipalOfCreditFacilityYearThree" id="qnst_PercentageOfAmortizationWithPrincipalOfCreditFacilityYearThree" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfAmortizationWithPrincipalOfCreditFacilityYearTwo" id="qnst_PercentageOfAmortizationWithPrincipalOfCreditFacilityYearTwo" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="PeriodOfCancellationOfLetterOfCreditFromAnnualExpirationDate" id="qnst_PeriodOfCancellationOfLetterOfCreditFromAnnualExpirationDate" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="ProvisionForDoubtfulAccountsAndSalesReturns" id="qnst_ProvisionForDoubtfulAccountsAndSalesReturns" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RegisteredUserDatabaseAndOtherMember" id="qnst_RegisteredUserDatabaseAndOtherMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RetirementOfTreasuryStock" id="qnst_RetirementOfTreasuryStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="ScheduleOfComputationOfBasicAndDilutedEarningsPerCommonShareTable" id="qnst_ScheduleOfComputationOfBasicAndDilutedEarningsPerCommonShareTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
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  <element name="StockRepurchaseAtWeightedAveragePrice" id="qnst_StockRepurchaseAtWeightedAveragePrice" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TermLoanMember" id="qnst_TermLoanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoThousandTenIncentivePlanMember" id="qnst_TwoThousandTenIncentivePlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnauditedInterimFinancialInformationPolicyTextBlock" id="qnst_UnauditedInterimFinancialInformationPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UpfrontArrangementFeesIncurredInConnectionWithCreditFacility" id="qnst_UpfrontArrangementFeesIncurredInConnectionWithCreditFacility" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WebsiteTradeDomainNamesMember" id="qnst_WebsiteTradeDomainNamesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageEffectOfDilutiveSecuritiesAbstract" id="qnst_WeightedAverageEffectOfDilutiveSecuritiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WithholdingTaxesOnNetSettlementOfRsu" id="qnst_WithholdingTaxesOnNetSettlementOfRsu" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ZiffDavisEnterpriseMember" id="qnst_ZiffDavisEnterpriseMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
