Have you ever contributed an article to, or edited an article on, Wikipedia?

I have and it’s very satisfying.

I mainly edited existing articles, and it’s rewarding even of all you do is clean up the grammar, spelling and sentence structure of an existing article. It’s been quite some time since I logged on to Wiki, but I liked the challenge of polishing someone else’s information while staying true to their content.

If you’ve written your own articles, I admire you.