I play now and again on iBurst. If I have perfect signal my ping sits between 80 and 110. There are occasional spikes though nothing rediculous. Please bare in mind different towers have different reputations for performance - but that the technology does work!
i used to play Enemy teritory on iburst, i used to have a great ping but with all the tower over loading it went to s**t, i also use to play c&c generals and that worked great on iburst
I have also played some bf2 on Iburst, but htat never worked very well. I htink the proble mis with my vonnection thouigh, I have pretty bad latency in general. I am quite far from my base station.
But I can still play Warcraft fine and even Area 51 would work okay. It was the only game i could get to work online besides bf2 becuase i have pirated games. I would think that with a good connection you could definately play games online, CSS would be pretty heavy for Iburst to handle, but it could well work.
i just got iburst and tested out css - i sit on 60 to 70ms constant with no loss and the odd choke spike or so.... keep in mind that i live about 20 metres away from the tower
so yes if you've got 100% signal - css will definately be playable -
also dont try to play it with the usb cable - only connect to the utd via ethernet otherwise 500 to 600ms will be upon you.
and like the peeps said rpg's ( Guild Wars) work perfectly