The reason we want to give it away is mostly due to an article that we read (and have somewhere in the house). Saying that some of these guys can become very crafty predators, using various methods of looking and acting like rock until someone gets too close or lets their guard down. Upon thinking back on the issue, we realized that he might have been the reason that our shrimp disappeared. The only aggesion that we've ever seen was when he attacked a nessarius snail (which was just funny as heck to see) and the snail got away. The star has never done any damage to coral and is fun to watch, but he just isn't right for our community style reef.
I know I'm being a horrible salesmen here, but I just wanted whoever did get him to know what I know before it has the possiblity to become an issue.