(4) Property and Equipment (5) Non-marketable Investments Forrester Research | Annual Report 2000 f-22 | 23 During the year ended December 31, 2000, Forrester charged approximately $300,000 to the cost of services and fulfillment related to services provided by Doculabs. In March 2000, Forrester invested $1.0 million to purchase common shares of Doculabs, Inc. (Doculabs), a privately held and independent technology research firm, resulting in approximately a 3.9% ownership interest. This investment is being accounted for using the cost method and, accordingly, is being valued at cost unless a permanent impairment in its value occurs or the investment is liquidated. As of December 31, 2000, Forrester has determined that a permanent impairment has not occurred. Forrester also has an option, which it has exercised in 2001, to purchase an additional $2.0 million of Doculab’s common shares. The number of shares issuable upon exercise of the option vary according to Doculabs’ valuation as of December 31, 2000, as determined pursuant to the purchase documents. To date, Forrester has contributed approximately $4.0 million to the private equity investment funds. These investments are being accounted for using the cost method and, accordingly, are being valued at cost unless a permanent impairment in their value occurs or the investments are liquidated. As of December 31, 2000, Forrester has determined that a permanent impairment has not occurred. In June 2000, Forrester committed to invest $20.0 million in two private equity investment funds over a period of up to five years. Forrester has adopted a cash bonus plan to pay bonuses, after the return of our invested capital, from the proceeds of a portion of our share of net profits from these investments, if any, to certain key employees, subject to the terms and conditions of the plan. The payment of such bonuses would result in compensation expense with respect to the amounts so paid. In July 2000, Forrester invested $1.6 million to purchase preferred shares of comScore Networks, Inc. (comScore), a provider of infrastructure services which utilizes proprietary technology to accumulate comprehensive information on consumer buying behavior, resulting in approximately a 1.2% ownership interest. This investment is being accounted for using the cost method and, accordingly, is being valued at cost unless a permanent impairment in its value occurs or the investment is liquidated. As of December 31, 2000, Forrester has determined that a permanent impairment has not occurred. At December 31, 1999 and 2000, property and equipment consisted of the following (in thousands): Gross realized gains and losses on sales of marketable securities for the years ended December 31, 1999 and 2000, which were calculated based on specific identification, were not material. 1999 2000 Computers and equipment $ 9,165 $ 20,440 Computer software 5,348 7,751 Furniture and fixtures 2,701 3,289 Leasehold improvements 1,903 4,852 Total property and equipment 19,117 36,332 Less – accumulated depreciation and amortization  (7,498) (14,204) Property and equipment, net $11,619 $ 22,128 Notes to Consolidated Financial Statements (continued)