If you're a PS3 owners looking to maximize your Portal 2 experience with the likes of cross-platform chat, Steam Achievements, profiles, invites and even a free token to play the game on a PC or Mac, the only bit of hoop-jumping required is signing up for a Steam account. This allows Valve to mesh your Playstation Network account with their own online service, marrying the two for an experience Microsoft won't permit on Xbox 360.
Valve have already been pretty open in declaring the PS3 version of Portal 2 the standout on consoles, and it'll be interesting to see how Microsoft respond if the cross-platform ideals of Portal 2 result in better sales for the PS3 version. We got to get our hands on Portal 2 quite recently, so check out Jon's fantastic preview of the game's first twenty minutes right here. Portal 2 ships this month, April the 22nd, on PC, PS3 and Xbox 360. [Eurogamer]