Questioners on Yahoo Answers: who are you ?

Sometimes I spend quite a bit of time trying to help with a good answer. Just lately I have clicked on the questioner's icon to see more about them. In each case, it appears they cannot be genuine people because in each question they ask they are a different character! (I young girl of 15 with hair issues, an older woman with husband issues, a boy with sexual problems, all the same named person!!). Why do you think people do this? Do you do it? (that is - be many people and not be yourself) on Yahoo Answers?