Naming no names, screen names or otherwise...
I was on another forum, and one infamous member, who was famous for being a bit of a cow to the regular members, and generally being an attention seeker, died. A poster using her account, which was apparently her brother, explained that she had died, and also revealed parts of a 'will' this girl had written, apologising for, and explaining her behaviour. There was some sympathy, although most people called bullcrap. A year later it was revealed that this 'girl' was in fact a boy, and he had done the same thing on a number of message boards, and had even confessed it was a scam on one. She/he/it/whatever was given a permanent ban for deceiving everyone.
Another fellow on the same boards, about 5 years ago, claimed he was dying, and posted messages such as 'Well, that's it. The docs told me I have [so long] to live...' Now I was taken in by this, and responded with a short but heartfelt message. A few months later, another member, a 'friend' of this guy, said this person had passed on. About a year ago, this 'dead' person reposted on a random thoughts spam thread. A couple of people, including myself, spotted this, and the moderating team investigated. The posts running up to his 'death' described crazy symptoms like 'bleeding from the eyes', and his other posts did not seem like those of a dying person. This guy's excuses was that he was dared to do it by a member I'd thought as respectable, and that he was drunk. He was also banned.