I'm honestly pretty bad at pirating. I'd _love_ it if HBO threw up paid streaming for Game of Thrones. If they charged something like $3/episode I think it might actually even be cheaper than the time I spent trying to pirate it (granted, most people are probably better than I am at pirating).
See eztv.it when you create account you can register which series you are interested in and then you will have a personal page on which you can get directo torrents for new/unwatched episodes
I should add: I'm looking for these episodes relatively quickly after they're aired. The PB links I get when I google for stuff don't seem to be for recent episodes.
A friend of mine generally finds a link through his own sources relatively quickly and shares it, though.