I once upon a time set up a Maximus BBS, but never really went live with it. I do remember the first time I dialed into a BBS though it was for a local computer parts seller. You would dial in to get their current price list. The first time I logged in they asked for a handle. I had no clue so started looking around my room for inspiration. I saw my waterbed there and Waterman popped into my head. I've pretty much run with it ever since. Adding numbers as "waterman" was already taken first on AOL, then on Yahoo.