Sorry to post so much but if you're a lurker, a new person, someone who wants to contribute but you're scared of being found out, you can use an IP hider.
You can google ip hider, or proxy server, and find lot's of websites. For instance, pimpmyip.org
Then you enter in the little toolbar on that page, the web address of this website, and you can log in, and it will put out a different IP address (the way people find out who you are, where you're from). So if they find a way to trace your ip, they will only get the ip of the proxy server website. It's what I use