At Wikipedia, Illustrators May Be Paid: Wikipedia will pay artists who create illustrations for a specific list of articles that need them. I wonder if this is the start of a trend.
The woman running the project for Wikipedia, Brianna Laugher, says the plan is to create a list of articles that need illustrations and then solicit the work. The first list is expected to have 50 illustrations and be completed this month. Contributors will be able to sign up for an illustration and have two weeks to submit it; if it is accepted, the illustrator will be paid $40.