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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;The Company records a deferred tax asset or liability based on the difference between the
   financial statement and tax bases of assets and liabilities, as measured by enacted tax rates
   assumed to be in effect when these differences reverse. The Company believes there is significant
   uncertainty in its future profits due to the growing breadth of its product mix and the effect that
   can have on the timing of revenue recognition, and the related effect on reported U.S. income.
   At September&amp;#160;30, 2010, the Company determined that it is more likely than not that the net U.S.
   deferred tax assets may not be realized and a full valuation allowance continues to be recorded.
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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;The $0.3&amp;#160;million income tax provision recorded for the three month period ended September&amp;#160;30,
   2010 relates to the U.S. alternative minimum tax (&amp;#8220;AMT&amp;#8221;), inclusive of allowable tax loss
   carryforwards, state and foreign income taxes as well as interest related to uncertain tax
   positions. The AMT liability is available as a credit against future tax obligations upon the full
   utilization or expiration of our net operating loss carryforwards. The $0.2&amp;#160;million benefit for
   the nine months ended September&amp;#160;30, 2010 includes approximately $1.4&amp;#160;million related to the
   reversal of the valuation allowance on certain deferred tax assets as described below.
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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;During the nine months ended September&amp;#160;30, 2010, the Company recorded net deferred tax
   liabilities of approximately $1.4&amp;#160;million related to basis differences resulting from the
   acquisition of InstantService. As a result of the InstantService acquisition, the Company released
   a portion of its valuation allowance amounting to approximately $1.4&amp;#160;million to offset the impact
   of the deferred tax liabilities acquired on its pre-acquisition net deferred tax asset balance. In
   accordance with ASC 805, &lt;i&gt;Business Combinations&lt;/i&gt;, the release of the valuation allowance was recorded
   as a tax benefit in the statement of operations.
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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;For the three and nine months ended September&amp;#160;30, 2009, the Company recorded income tax
   benefits of $1.7&amp;#160;million and $0.8&amp;#160;million, respectively, which related to the tax benefits
   recorded as a result of the decreases in the Company&amp;#8217;s uncertain tax positions offset by U.S.
   federal alternative minimum tax, state and foreign income taxes.
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher SEC
 -Name Regulation S-X (SX)
 -Number 210
 -Section 08
 -Paragraph h
 -Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 109
 -Paragraph 136, 172

Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 109
 -Paragraph 43, 44, 45, 46, 47, 48, 49

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