I recently amazed several non-tech friends by mentioning that I, personally, have edited Wikipedia. It's not something a lot of people think of as something the

I recently amazed several non-tech friends by mentioning that I, personally, have edited Wikipedia. It's not something a lot of people think of as something they can even do. They're not fixing typos, let alone making substantive edits or writing new articles. I realize "do most people edit Wikipedia" is different from "are most Wikipedia edits from casual users", but it was an eye-opening interaction for me.