Several contributors to this blog, including yours truly, and no doubt a number of our readers too, have recently been bitten by the Facebook bug. Facebook bills itself as "a social utility that connects you with the people around you", and its kind of fun too. In addition to being able to track what your friends are up to, it is also possible to join groups of like-minded individuals to share ideas, and socialise (reminds me of those sessions in the bar at the end of a hard day's work at a linguistics conference). Along with the predictable groups centered around Noam Chomsky, there is also "You're a Linguist? How many languages do you speak?", "Typologists United", and my particular favourite "Thomas Payne is My Hero" whose members are:
"dedicated to the source of all linguistics knowledge, Thomas Payne. His manuals are so good that they can apply to any discipline at any time. Physics problems? Open the textbook and realize that you should really be a linguistics major. Life? Look up grammatical relations and discover meaning in existence. Linguistics? You better just read the whole thing. Oh Thomas Payne, what would we do without you?"
Facebook is part of what has been termed "Web 2.0" by Tim O'Reilly.