PEOPLE! Consider the opportunity here - we are finally getting cross-console support for multiplayer games! And if they go back and update all of the older source engine games to work this way, you could very well be jarate-ing some poor console shmuck, or pwning some CS newbs within the next year!

This could be a good thing. On one hand, if Valve at least provide keyboard/mouse support for their PS3 games, they'd be doing something that is seriously lacking right now which could go on to introduce people to mouse/keyboard gaming on the PC (which would be one reason to give the PC/mac versions free).

On the the hand, if Valve fuck this up in the long run, then they might finally find themselves on the receiving side of some class action lawsuits. Something that really should have happened by now in regards to several of their current actions (such as disabling an entire account over any kind of billing error/charge back).

No, because they can´t. But if Sony allows them to do it, yes they will...