I've been trying to make money through writing nonfiction. It's not nearly as much fun as writing fiction, but with writing articles, you can be paid immediately instead of waiting for royalties.
So far, I haven't been making as much as I would like.
But I have found a site that seems promising - Constant Content. You can write whatever you want and list a price for one-time rights, unique rights, or full rights. You can also write articles that clients are specifically looking for, but there is heavy competition for those. So far, I've written two articles there. It's more fun than some other sites.
I've also been writing answers for a new to me site: webanswers. It seems similar to Yahoo Answers but you get paid (from ad clicks) if your answer is picked as the best one.
I had written a bunch of articles for eHow but now that's no longer an option. There are many other sites like eHow out there, but I wish I could find more that offered upfront payment.
Are any of you freelancers? What site do you write for? Any one know of any editing or proofreading opportunities?
And if you have the time, I was interviewed about why I write fantasy here. Would love for you to check it out!