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Facebook has passed the 300 million-member mark worldwide, as well as turned free cash-flow positive ahead of schedule, the company's CEO, Mark Zuckerberg, announced Tuesday. Facebook now generates enough cash from business operations to cover the cash it spends on capital expenditures. "This is important to us because it sets Facebook up to be a strong independent service for the long term," Zuckerberg said.

Facebook is also becoming more popular with its tag feature. Facebook already allowed users to tag photos to identify other Facebook contacts. But now users can also tag posts and status updates, with their contacts, allowing the latter to follow and search for events more closely. The new tagging is actually borrowed from Twitter, a rival social network. Twitter users use the ‘@' symbol followed by the name of other Twitter users as a means of tagging the user and providing a link to that user's profile.