Keep forgetting about Black Friday. You can buy a PokerStars account from people in Bolivia/Germany/etc. and use a VPN to connect. I know a few people doing this. There's a new online site in Nevada right now, only for Nevada residents, but I hear it's a pretty big failure. New Jersey is very close to releasing it's own online poker site as well.

On top of that I think most US players play on iPoker skins (black chip poker, cake poker, etc.) which allow US players.

But yeah, all of them (apart from the Nevada/New Jersey sites) are technically illegal down there. Most professionals who didn't quit poker altogether and didn't transition to live either moved to Canada or some third world country with no taxes and cheap living to grind.