I don't, but I have several friends that do. I remember when my friend Brett came into the office one day and said that he'd purchased MajorMUD for himslef as a Christmas present. We all assumed that he meant he'd purchased a membership or something, but as it turns out, he actually bought MajorMUD (that is, he owned the IP). I have no idea if he still owns the rights, but it is still registered as being the property of a Kansas City area company, so it's quite possible. I never much cared for MUDs, but this guy (obviously) had a real love for them.