It doesn't matter to me, I suppose.

However, I think it can get confusing in some posts. For example, if I were to post in a thread as "Twisterdog", and later in the thread someone were to say, "I agree with what Shanna said.", people might be thinking, "Shanna? Who the heck is Shanna?"

Some days I can barely remember the names of my customers, let alone lots of people with different user names on a message board.