From /SecondLife comes this incredibly disturbing story of some SLers who were ruthlessly stalked in Second Life and into the real world:
I reported this jerk, so did all her friends. He was ignored and his carbon copy accounts blocked. So he made more. Many more. He copied outfits, displaynames and profiles and would hang out at places where my friend would hang out sending nasty IM's to people calling them names, fag, tranny etc...
He used several alts to monitor the main public hangouts, we tried in vain to pattern match accounts on the region preceding everyone near by a victim getting messaged. He tracked my friend down RL and sent a message about her kids and their school. She finally folded and quit SL. He wasn't finished with me, and started using single use rezzed prims to send me scripted IM's calling me and the people around me names. These could not be blocked, every message came from a brand new object rezzed somewhere in SL. A few times we got to the objects location just as he logged off and with a lot of messages managed to get the main copy cat accounts banned from social sims. We made a blog and logged every incident and sent that to Linden Lab staff. My friend went to the police, they told her to stop using the internet.
There's a lot more to this, and it concludes with this ominous warning worth emphasizing: "There are major issues in how abuse and harassment are handled and no one at Linden Lab seems prepared to step up. Be careful what you reveal about yourself in SL because no one has your back."
Linden Lab, by the way, is hardly the only tech company struggling to deal with this variety of stalking -- Twitter, for example, is a much larger company, and after years of trying, still has profound difficulty dealing with it. Incidences like these -- or the one I reported last year, in which a woman was stalked in real life by someone who reverse image searched her SL avatar -- convince me that the next generation of VR-connected virtual worlds have a massive problem on their hands.
To be sure, many SLers report no experiences of harassment at all, and even argue that the world's architecture itself discourages such behavior: