I'm pretty sure you can play it online, and I'm pretty sure you have to pay for it monthly too... wireless, probably need an adapter for that, I don't think it has wifi.
Yeah, it's nice---got wifi and bluetoof. Unfortunately I don't have internet at home, but if I did (which I might be forced to get when GTA IV comes out), it'd be the joint.
Yeah, ya gotta get the broadband. Playing online is freaking sweet...plus it allows the system to do its own upgrading with patches, etc. There's also lots of demos you can download for free....good times, good times.