It happened to me as well but on different websites. Just after registering my IP was banned for nothing. Then some people told me that it might have been used by someone (a hacker, apparently), and now I need to wait some time. How can we protect our IPs?
I also prefer debit cards to credit ones because the latter gives you the feeling that you own all the money in the world and then you have to pay interest rate
I always thought that Western Union is a trustworthy organization, but it turned out it is easy to lose money even using their services, because there are always phishing websites that can access even your WU credentials((( Be careful!