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&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense for each reporting period.&amp;#160; Estimates are used in accounting for, among other things, allowances for doubtful accounts, self-insurance obligations, deferred taxes and related valuation allowances, uncertain tax positions, loss contingencies, fair value of financial instruments, fair value of options granted under our stock-based compensation plans, fair value of assets and liabilities acquired in business combinations, fair value of multi-element arrangements, capital leases, asset impairments, estimates of future cash flows used to evaluate impairments, useful lives of property, equipment and intangible assets, retailer incentives, programming expenses, subscriber lives and royalty obligations.&amp;#160; Weak economic conditions have increased the inherent uncertainty in the estimates and assumptions indicated above.&amp;#160; Actual results may differ from previously estimated amounts, and such differences may be material to the Condensed Consolidated Financial Statements.&amp;#160; Estimates and assumptions are reviewed periodically, and the effects of revisions are reflected prospectively in the period they occur.&lt;/font&gt;&lt;/p&gt;
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&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;The preparation of financial statements in conformity with accounting principles generally accepted in the United States (&amp;#8220;GAAP&amp;#8221;) requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense for each reporting period.&amp;#160; Estimates are used in accounting for, among other things, allowances for doubtful accounts, self-insurance obligations, deferred taxes and related valuation allowances, uncertain tax positions, loss contingencies, fair value of financial instruments, fair value of options granted under our stock-based compensation plans, fair value of assets and liabilities acquired in business combinations, fair value of multi-element arrangements, capital leases, asset impairments, estimates of future cash flows used to evaluate impairments, useful lives of property, equipment and intangible assets, retailer incentives, programming expenses, subscriber lives and royalty obligations.&amp;#160; Weak economic conditions have increased the inherent uncertainty in the estimates and assumptions indicated above.&amp;#160; Actual results may differ from previously estimated amounts, and such differences may be material to the Consolidated Financial Statements.&amp;#160; Estimates and assumptions are reviewed periodically, and the effects of revisions are reflected prospectively in the period they occur.&lt;/font&gt;&lt;/p&gt;&lt;/div&gt;
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&lt;p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in;"&gt;&lt;font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt;" size="2"&gt;&amp;#183;&lt;/font&gt;&lt;font style="FONT-SIZE: 3pt;" size="1"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/font&gt; &lt;font style="FONT-SIZE: 10pt;" size="2"&gt;Level 2, defined as observable inputs other than quoted prices included in Level 1, including quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which significant inputs and significant value drivers are observable in active markets; and&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in;"&gt;&lt;font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt;" size="2"&gt;&amp;#183;&lt;/font&gt;&lt;font style="FONT-SIZE: 3pt;" size="1"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/font&gt; &lt;font style="FONT-SIZE: 10pt;" size="2"&gt;Level 3, defined as unobservable inputs for which little or no market data exists, consistent with reasonably available assumptions made by other participants therefore requiring assumptions based on the best information available.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;As of March&amp;#160;31, 2013 and December&amp;#160;31, 2012, the carrying value for cash and cash equivalents, marketable investment securities, trade accounts receivable (net of allowance for doubtful accounts), and current liabilities (excluding the &amp;#8220;Current portion of long-term debt and capital lease obligations&amp;#8221;) is equal to or approximates fair value due to their short-term nature or proximity to current market rates.&amp;#160; See Note 3.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;Fair values for our publicly traded debt securities are based on quoted market prices, when available.&amp;#160; The fair values of private debt are estimated based on an analysis in which we evaluate market conditions, related securities, various public and private offerings, and other publicly available information.&amp;#160; In performing this analysis, we make various assumptions regarding, among other things, credit spreads, and the impact of these factors on the value of the notes.&amp;#160; See Note 6 for the fair value of our long-term debt.&lt;/font&gt;&lt;/p&gt;
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&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;We determine fair value based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants.&amp;#160; Market or observable inputs are the preferred source of values, followed by unobservable inputs or assumptions based on hypothetical transactions in the absence of market inputs.&amp;#160; We apply the following hierarchy in determining fair value:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt 0.5in; TEXT-INDENT: -0.25in"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol" size="2"&gt;&amp;#183;&lt;/font&gt;&lt;font style="FONT-SIZE: 3pt" size="1"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/font&gt; &lt;font style="FONT-SIZE: 10pt" size="2"&gt;Level 1, defined as observable inputs being quoted prices in active markets for identical assets, including U.S. treasury notes;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt 0.5in; TEXT-INDENT: -0.25in"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt 0.5in; TEXT-INDENT: -0.25in"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol" size="2"&gt;&amp;#183;&lt;/font&gt;&lt;font style="FONT-SIZE: 3pt" size="1"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/font&gt; &lt;font style="FONT-SIZE: 10pt" size="2"&gt;Level 2, defined as observable inputs other than quoted prices included in Level 1, including quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which significant inputs and significant value drivers are observable in active markets; and&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt 0.5in; TEXT-INDENT: -0.25in"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt 0.5in; TEXT-INDENT: -0.25in"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol" size="2"&gt;&amp;#183;&lt;/font&gt;&lt;font style="FONT-SIZE: 3pt" size="1"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/font&gt; &lt;font style="FONT-SIZE: 10pt" size="2"&gt;Level 3, defined as unobservable inputs for which little or no market data exists, consistent with reasonably available assumptions made by other participants therefore requiring assumptions based on the best information available.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt 0.5in; TEXT-INDENT: -0.25in"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;As of December&amp;#160;31, 2012 and 2011, the carrying value for cash and cash equivalents, marketable investment securities, trade accounts receivable, net of allowance for doubtful accounts, and current liabilities, excluding the &amp;#8220;Current portion of long-term debt and capital lease obligations,&amp;#8221; is equal to or approximates fair value due to their short-term nature or proximity to current market rates.&amp;#160; See Note 4.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" size="2"&gt;Fair values for our publicly traded debt securities are based on quoted market prices, when available.&amp;#160; The fair values of our private debt are estimated based on an analysis in which we evaluate market conditions, related securities, various public and private offerings, and other publicly available information. In performing this analysis, we make various assumptions regarding, among other things, credit spreads, and the impact of these factors on the value of the notes. See Note 7 for the fair value of our long-term debt.&lt;/font&gt;&lt;/p&gt;&lt;/div&gt;
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