I don't buy that story. I have had a Twitter account for years and it probably has fewer than 10 tweets, plus I go months at a time without logging in. But '@anigbrowl' is unique and meaningless enough that nobody else is likely to attempt to register it. I'm not at all worried about it being deactivated, whereas if I had '@databases' I would ensure it was hooked up to some software equivalent of a hamster wheel that would generate a steady stream of activity.