Is it ok to ask questions that have already been asked and answered on other sites, and are easy to find? And then request users 'not to google it'?
When the answer does come out, it is possible that someone has searched for the answer but does not want to declare so (to gain rep). It is also possible that people happen to 'know' the answer due to their earlier research. Lastly, it is possible that someone makes a genuine attempt and people are not sure whether to trust him/her.
I am against this because users who like such challenges can anyway browse through old questions.