I had one walk into my house (when I had the door open )a couple of years ago and he refused to leave and demanded sex. I AR'd him and so did the sim owner who saw him wandering around naked. I ran into him again a few months ago and he started harassing me again-this time in public. As far as I know he still is in SL even though I filed another AR and so did the owner of the sim we were on the second time.
Ah well. *sighs* SO many assholes. Sorry that your club had to deal with that
Abuse Reports never have an official follow-up, so it's hard to tell. I figured I'd check in a few days to see if there names are still around. From what others have posted, the griefers aren't likely to be perma-banned.