My screename is just my first name.
Usually in the past whenever I would join forums, I would often make the mistake of using the type of car or bike that I had at the time as my username. The thing is though when I sold that specific vehicle, then the name really doesn't apply anymore, and of course I can't change it.
I learned my lesson from doing that and know better now not to do it with forums like this. If I join say a forum specific to that vehicle though, then I really don't see a reason why not to include that vehicle in my username if I wished to do so though.
Usually in the past whenever I would join forums, I would often make the mistake of using the type of car or bike that I had at the time as my username. The thing is though when I sold that specific vehicle, then the name really doesn't apply anymore, and of course I can't change it.