You get used to reading the same question with a different name, then the OP puts in another name at the end of the post. Things that make us go mmm??mmm
Similar questions are posted very often. They are always answered by the same people. The removed post in that question was "kaypar" answering but as the original poster (ie obviously forgot to log out under their other name before replying)
Thank you to all of you who answered my question. I'm glad that I don't have to troll hunt. I'd never catch them. I think I have a very low boredom threshold and I just switch off and don't notice the clues