I have recently been doing some writing for Scripted. This site is basically a middleman. Business owners go to Scripted with a project and Scripted finds the best writer for the job using their database. Writers sign up, apply for niche areas to write in, and then are assigned work as it comes available. The rates vary, depending on the type of work. Blogs usually pay around $20, for example. You don't get paid extra for photos, though, which is my only complaint.
I really like this site. There's no need to submit bids or hunt for work. If you need a good site to supply you with filler work, then I highly recommend this site.
Here is some more information on Scripted.