I do play online poker but just really small amount. First time, I put 10$ and went to 80 after 3 hours. Cashed out and got a check in 3 days. After, I placed another 10 and I play with this since a few months going up and down.
When playing with friends, I put a little more but online, I'm just scared that something happend in the middle of an important hand. Can you imagine, you have an excellent hand and the other guy go all in, you have already put a lot on this hand, you know your hand is better, your turn. Just when you want to hit call, BOOM, screen go dark (electric power failure). SPAARK, it this YOU?
As for using a credit card online, this is not something I'm scared of. Yeah, some websites can use this info but this is the same as a waiter in a restaurant talking your card for 5 minutes. Or hotel taking a reservation on the phone,...
Online poker sites do so much money with the rake from tables, they have no interest in using your credit card info.