i once heard it was possible to play wow for free by doing this:
1 pay with your credit card online
2 play 1-2 days
3 cancel the payment
4 goto 10
end
cause it takes them about 2 days to charge your credit card, they allow you to play in that time, if you cancel the transaction before then you get your money back
- edit -
or you can pay and login, then cancel the payment and stay online for as long as you want (if you don't get dc-ed)