I have just now linked both my PS3 and my PC over a program called Folding @ Home. It is not designed to link PS3’s to PC’s, but rather it is a protein folding simulation that comes in both computer and console formats. You can set both to work together in one online ‘team’, the practical upshot of which is that you can cure cancer while playing video games and reading your e-mail (or anything else similar). The F@H homepage can be found here and so can the PC client. The PS3 client is built-in and can be used with an internet connection.