During the ordinary course of business, there are many transactions and calculations for which the ultimate tax determination is uncertain. For example, our effective tax rates could be adversely affected by earnings being lower than anticipated in countries where we have lower statutory rates and higher than anticipated in countries where we have higher statutory rates, by losses incurred in jurisdictions for which we are not able to realize the related tax benefit, by changes in foreign currency exchange rates, entry into new businesses and geographies and changes to our existing businesses, acquisitions, by changes in the valuation of our deferred tax assets and liabilities, or by changes in the relevant tax, accounting and other laws, regulations, principles and interpretations. We are subject to audit in various jurisdictions, and such jurisdictions may assess additional income tax against us. Although we believe our tax estimates are reasonable, the final determination of tax audits and any related litigation could be materially different from our historical income tax provisions and accruals. The results of an audit or litigation could have a material effect on our operating results or cash flows in the period or periods for which that determination is made, as well as prior and subsequent periods. 

If we determine that additional portions of our deferred tax assets are realizable, the majority of the benefit will come from the assets associated with the stock-based compensation that was not recognized in the financial statements, but was claimed on the tax return. Since this compensation did not originally run through our consolidated statements of operations, the benefit generated will be recorded to stockholders’ equity. 

Recent Accounting Pronouncements 

See Item 8 of Part II, “Financial Statements and Supplementary Data—Note 1—Description of Business and Accounting Policies—Recent Accounting Pronouncements.” 

Liquidity and Capital Resources 

Our financial focus is on long-term, sustainable growth in free cash flow. Free cash flow, a non-GAAP financial measure, was $2.09 billion for 2011, compared to $2.52 billion and $2.92 billion for 2010 and 2009. See “Results of Operations—Non-GAAP Financial Measures” below for a reconciliation of free cash flow to cash provided by operating activities. The decrease in free cash flow in 2011 was primarily due to increased capital expenditures and changes in working capital, partially offset by increases in sales of gift certificates to our customers, decreased tax benefits on excess stock-based compensation deductions, and increases in net income, excluding depreciation, amortization, and stock-based compensation expense. The decrease in free cash flow in 2010 was primarily due to increased capital expenditures, changes in working capital, and utilization of excess stock-based compensation deductions, partially offset by increases in net income, excluding depreciation, amortization, and stock-based compensation expense. Tax benefits relating to excess stock-based compensation deductions are presented in the statement of cash flows as financing cash inflows; accordingly, as such tax