Okay, please PLEASE understand that you'd be using this website I'm going to link you to at your own risk. I've been using it and haven't experienced any malware problems - but that doesn't mean it's impossible.
It -does- strike me as relatively safe since you can stream the episodes rather than watching them, however.
But again. At your own risk. Don't come crying to me, etc.
http://www.megashare.info/#Search,true blood
Complete Seasons 1 and 2, as well as all Season 3 episodes by the day after airing.