PP - I am familiar with all the main sites. I've actually been reading that it's best to STAY AWAY from these as they attract the real sharks.
One thing nice about Poker that you do not see in trading is that certain 'exchanges' exist and certain 'exchanges' attract certain players.
For example, I've read that bodog.com is a great site to play poker b/c it's mainly a sports betting site and you find more loose play here vs. Full Tilt or Pokerstars.
I'm also amazed at the software out there to help your play. I am looking at:
http://www.poker-edge.com Just have to watch the demo to see what this thing is capable of. Imagine trading against your opponent when you already know how likely it is that your opponent will beat you... It's pretty amazing actually.
Anyone know of any good poker blogs? I like reading the blogs. I'm thinking of starting a poker one.