Yes, I did just make a "How to welcome yourself" thread. Sounds silly, but this way we will not just have one thread dedicated to welcomes and leavings.
Much like the Appliance forums, you must create a thread entitled with your name. In the thread just tell us a little bit about yourself and anything else that you think we whould know. If you are leaving, then just post in the same thread, if it is not there anymore then make a new one.