Not been harassed but have harassed.
Was this guy on my realm who had a blog and I came across it. I didn't exactly like the guy, I found out he had relationship problems and pestered him about it and I also found out he was transgender and well, went full retard on him. He got all paranoid over it. I got known for being somewhat of an ass on the server in the end.
Fucked over a guild member when I was the webmaster of a guild I was in, messed about with him so he flipped due to him defending someone who had posted the guildmasters rl personal info straight out on trade chat, thinking it wasn't that bad. He ended up migrating away from the realm in the end, something I laughed at. The one he was defending got banned as well.