On my server the latter has happened probably due to market board war.
First an avatar shows up standing beside me for around 5 to 10 min with the name
Suck My%Very bad word towards every female%
Then on a product a Retainer shows up with %Offensive as heck%female gamername.
So things is getting "cozy" on my server because apparently it should be only one seller on the market board and that is the Bot.
Cheers.