Facebook will launch Facebook Chat, a Web-based IM system built into Facebook, in the coming weeks, flack Meredith Chin confirmed today. There go startup Social.im's hopes for an acquisition. Chin wouldn't share any more details. (You should. Leaks are good for business, remember.) She also said Facebook would introduce new privacy updates tomorrow, including an option to allow "friends of friends" to share information. I'll start. 25/m/NY.