Because it's a Q&A forum, many users come, post once, get a reply and then leave. If the question has previously been asked (especially useful for crossworders) they don't need to ask- the question and reply is there already for them.
and this is one of the questions that is asked quite alot, did it not appear in the list of previously asked questions? you will get used to the site i am sure.
well you have asked a question in every category tonight, do you think you will be back with a new batch tomorrow? I guess it all depends on how interesting the replies are and how much trouble people go to to help you.