We at UsingEnglish.com would like to say a couple of things about your personal safety whilst using the internet, email, chat etc. We do not want to scare you, but it is important that everyone here understands the security issues.
Firstly, we advise you not to use your email address as a username or give it out in a forum post . It may be used to send you spam emails which can be very irritating. If you want people to be able to email you, they can do so from your user profile.
Secondly, and much, much more importantly, never give contact information to people who you do not know on the internet or in emails or chat.
Here are some basic personal safety tips you should consider when on the Internet:
The BBC ChatGuide gives more detailed advice on keeping you and your family safe on the Internet.