I did these seriously for the first half of '03. The bonuses aren't nearly as good now as what they were back then, but they're still worthwhile I guess.

MANY casino's let you deposit with no intention of paying you back, so you ahve to do your research about who is reputable.

Read the terms and conditions carefully. Many bonuses do not allow BJ play when meeting the requirements.

Personally I think poker is a much better way to make money. It doesn't take much to get a higher hourly rate, and it's much more longterm. Casino's don't require much skill though, just memorizing some play charts (I assume you know these, if not check out 'basic stategy' for blackjack and videopoker at wizardofodds.com)