Stock Compensation - because (1) the total amount of expense is partially outside of our control because it is based on factors such as stock price volatility and interest rates, which may be unrelated to our performance during the period in which the expense is incurred, (2) it is an expense based upon a valuation methodology premised on assumptions that vary over time, and (3) the amount of the expense can vary significantly between companies due to factors that can be outside of the control of such companies.Acquisition-Related Expenses - including such items as, when applicable, amortization of acquired intangible assets, fair value adjustments to contingent consideration, fair value charges incurred upon the sale of acquired inventory, acquisition-related professional fees and deemed compensation expenses, because they are not considered by management in making operating decisions and we believe that such expenses do not have a direct correlation to future business operations and thereby including such charges does not accurately reflect the performance of our ongoing operations for the period in which such charges are incurred. Litigation Settlement Gains and Losses - including gains and losses related to the resolution of other than ordinary course threatened and actually filed lawsuits and other than ordinary course contractual disputes, because (1) they are not considered by management in making operating decisions, (2) such gains and losses tend to be infrequent in nature, (3) such gains and losses are generally not directly controlled by management, (4) we believe such gains and losses do not necessarily reflect the performance of our ongoing operations for the period in which such charges are recognized and (5) the amount of such gains or losses can vary significantly between companies and make comparisons difficult. Restructuring-Related Charges - because, to the extent such charges impact a period presented, we believe that they have no direct correlation to future business operations and including such charges does not necessarily reflect the performance of our ongoing operations for the period in which such charges are incurred. Deferred Executive Compensation - including charges related to any contingent obligation pursuant to an executive severance agreement because we believe the period over which the obligation is amortized may not reflect the period of benefit and that such expense has no direct correlation with our recurring business operations and including such expenses does not accurately reflect the compensation expense for the period in which incurred. Amortization of Discount on Convertible Debt - comprised of the amortization of the debt discount recorded at inception of the convertible debt borrowing related to the adoption of ASC 470-20, because the expense is dependent on fair value assessments and is not considered by management when making operating decisions. Gains and Losses on Retirement of Convertible Debt - because, to the extent that gains or losses from such repurchases impact a period presented, we do not believe that they reflect the underlying performance of ongoing business operations for such period. Certain Income Tax Items - including certain deferred tax charges and benefits which do not result in a current tax payment or tax refund and other adjustments which are not indicative of ongoing business operations. The non-GAAP financial measures presented in the table above should not be considered in isolation and are not an alternative for, the respective GAAP financial measure that is most directly comparable to each such non-GAAP financial measure. Investors are cautioned against placing undue reliance on these non-GAAP financial measures and are urged to review and consider carefully the adjustments made by management to the most directly comparable GAAP financial measures to arrive at these non-GAAP financial measures. Non-GAAP financial measures may have limited value as analytical tools because they may exclude certain expenses that some investors consider important in evaluating operating performance or ongoing business. Further, non-GAAP financial measures are likely to have limited value for purposes of drawing comparisons between companies because different companies may calculate similarly titled non-GAAP financial measures in different ways because non-GAAP measures are not based on any comprehensive set of accounting rules or principles.