This excerpt taken from the NYFX 10-K filed Mar 16, 2009.
Critical Accounting Policies and Estimates
The preparation of our consolidated financial statements in conformity with generally accepted accounting principles (GAAP) requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amount of revenue and expenses during the reporting period. On an ongoing basis, we evaluate our estimates that are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. The result of these evaluations forms the basis for making judgments about the carrying values of assets and liabilities and the reported amount of revenue and expenses that are not readily apparent from other sources. Because future events and their effects cannot be determined with certainty, actual results could differ from our assumptions and estimates, and such difference could be material. Our significant accounting policies are discussed in Note 1 to the Consolidated Financial Statements. Management believes the accounting estimates described in the following narrative to be the most critical to aid in fully understanding and evaluating our reported financial results, and they require managements most difficult, subjective or complex judgments, resulting from the need to make estimates about the effect of matters that are inherently uncertain. Management has reviewed the accounting policies and critical accounting estimates and related disclosures with our independent registered public accounting firm and the Audit Committee of our Board of Directors. The following narrative describes the critical accounting policies and estimates, the judgments and assumptions and the effect if actual results differ from these assumptions.