A buddy of mine has come over a couple times this week and decided to deposit a hundred bucks into an online casino. After a bit of looking around and playing the play money at a few sites, we settled on Bodog. They offered a 20% bonus on your first deposit, not exactly a lot of cash, but a free 20 bucks.
So the first day he put $50 down on the craps table and within 10-15 minutes was down to $1. We moved on to Blackjack with another $50, and by the end of the evening had run that up to over $100 in profit, so with the initial depost bonus and his profit, he was up $120 for his $100 deposit.
Then he decided to come over last night and try his luck again. Needless to say he couldn't lose, other than a few minor times. He ran his money up and had an overall profit of $500. Then he let me play poker for a bit, just on a little .10/.25 NL table. I sat down with $20 and within maybe an hour or so had doubled it to $60. Then he started to play some blackjack again and started to donk away almost $100 before he ran it all back up to what he sat at before.
It's amazing and I have no idea how he is up $550 for about 5-6 hours worth of blackjack, just from his initial $100 deposit. Perhaps I should switch games.
[edit:] Forgot to mention that I have about $150 in Pokerstars now and basically keep going up and down around that mark playing the micro-NL cash games. I'm probably going to switch to some SnG's again soon.