a stackoverflow clone: http://mathoverflow.net/ from the faq: What kind of questions can I ask here? The primary criterion for determining whether a question is appropriate for Math Overflow is "is this of interest to mathematicians?" By a "mathematician," we mean a person whose primary occupation is doing mathematics. Of course, you should make your question detailed and specific, and write clearly and simply. Part of the goal of this site is to produce a repository of standard questions and answers that mathematicians have when they are exploring a new field; these "newbie" questions are welcome and even encouraged. Please look around to see if your question has already been asked (and maybe even answered!) before you ask. If you end up asking a question that has been asked before, that is OK and deliberately allowed. Other users will hopefully edit in links to related or similar questions to help future visitors find their way. It's also perfectly fine to ask and answer your own question, but pretend you're on <http://en.wikipedia.org/wiki/Jeopardy%21>Jeopardy: phrase it in the form of a question. Also, we recommend not answering your own question immediately since leaving the question "open" encourages other people to respond to it. You might discover that somebody else has an even better answer! ... --- co-chair http://ocjug.org/