Valve Announces Portal 2
eldavojohn writes "Enough rumors, Portal 2 is due out for 2010. Valve also let users know through an announcement on Steam. Game Informer seems to be the de facto provider of Portal 2 information so far. Prepare yourselves for more aperture science! Notice anything funny about the underlined letters in Steam's announcement?"
...along with the rest of the ARG. They've already been quite solved, over there. http://portalwiki.net/
While you're waiting for Portal 2, play the FV mappack if you haven't already. It introduces some new game mechanics, and would itself have been an OK sequel (or prequel), except it's a totally free mod instead.
Don't put advice in your sig.