My time as a mercenary/rogue/assassin in Geas was very entertaining and I think also very social, but that still was not deemed worthy enough to not get bullied away from the game. I tried to be as interactive as possible instead of simply hiding and abusing thief guild skills to get ahead in unrelated goals.
To briefly summarize the plot: my rogue's group started a racket wherein they'd burgle or pickpocket and leave notes behind offering to sell anti-theft insurance. The idea was "lose it on your terms or ours". Unfortunately, we were not able to really get it going as our goal, which was to make PVP thieving a constant pest to anyone non-compliant, was considered incredibly antisocial and we started serious wars OOCly about if what we were doing was reasonable or fair.
Things came to a head in a plot in Elvandar wherein to punish an outspoken opponent of the group who had been trying to rally an resistance force against my rogue's group, there was a public assassination in Elvandar square - not of the opponent, but of one of the opponent's lady friends - as a way to say that opposition would be punished in cruel, indirect, and unpredictable ways.
Despite disguise, the ghost or some NPCs miraculously were able to identify the assassin, not to mention that they implicated another halfling who was unrelated to the hit but was a part of the group and was nearby, and a rallied force of about 4 player characters chased them around Elvandar city until sunup.
The bottom line here is that somewhere, someone made real the "knowledge" of the "truth" and it doesn't matter who, it doesn't matter why. My rogue was confronted and labelled and destroyed, with prejudice, for having PKed someone who could not have fought back, even though it was completely reasonable AND telegraphed.
Did I handle the aftermath well? No. Did I ragequit? ABSOLUTELY. But when your thief is confronted with someone who is 100% sure of the truth of something they *can't know* and they won't be convinced otherwise, you are backed into a corner. I was not given any opportunity to work things out. My character was not given any opportunity for plausible deniability. People wanted us GONE and they made it happen.
Edit: For those who care about this topic, the following thread has (in much more angry, freshly-wounded wording) pretty much all my novels regarding this event etc. viewtopic.php?f=3&t=1849
Edit2: As a thief, every play session, I asked myself "How am I going to instigate a PVP conflict today that is relevant to the thieves' guild and to my character, and makes the presence of thieves known." Not every day was I able, but apparently if you are a thief it is undesirable to enact that role. I think that's horseshit, I will always think that's horseshit. Just as I want to see Crusaders on patrol and Clerics blessing and proselytizing, I expect pickpockets to not only do it, but often enough to make sure that it is OBVIOUS that they exist. My goal was always to prove that thieves as an organization are present while keeping individuals protected.