Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
How do the users on stackoverflow answer so quickly? Are there that many users on at anyone time? I post a question and within a minute get a reply. Are people getting paid to run the site?
Yep, there are that many users on at any given time, and many of them are experts in their fields. But nobody's getting paid, except in mostly worthless Internet dollars (i.e. reputation points).