How safe is it? I tested it at whatismyipaddress.com and they were able to detect a proxy, but does that mean they could see the ip behind the proxy as well? What would TNT think if I were to use this to make multiple accounts?
When it's detected as a proxy, it means it's a known proxy. If it traced to be like an anonymous location, then that's a dead giveaway. But no, they can't see your real IP through a proxy.