Is there even any other streaming sites nowadays? Xfire maybe but it's really awful, own3d shut down and I don't think I've seen any other stream site.
Twitchtv. It's been a while since I stream on twitch but believe if you want to stream in 1080p you will have to have a paid twitch account. Also a good upload speed and beefy PC helps out
My buddy streams onwww.instagib.tvsometimes but I think it is shit for the most part. Pretty sure he is turning into a hipster though so that is probably why he chose that site.