| Accrued Expenses and Other Current Liabilities |
Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consisted of the following (in thousands):
| | | | | | | | | | As of December 31, | | 2020 | 2021 | | Indirect tax reserves | $ | 188,309 | | $ | 182,796 | | | Indirect taxes payable | 153,255 | | 309,616 | | | Travel credit liability | 209,739 | | 74,492 | | | Compensation and related benefits | 380,164 | | 415,626 | | | Derivative warrant liability | 985,181 | | — | | | Foreign exchange derivative liabilities | 32,250 | | 10,280 | | | Current portion of long-term debt and accrued interest expense | 26,755 | | — | | | Contingent consideration liability | 23,096 | | 34,344 | | | Sales and marketing | 25,437 | | 59,418 | | | Income and other tax liabilities | 12,002 | | 25,112 | | | Gift card liability | 56,489 | | 98,129 | | | Other | 321,394 | | 348,430 | | | Total accrued expenses and other current liabilities | $ | 2,414,071 | | $ | 1,558,243 | |
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