I get thanked often for anything I post here about how writers and artists can avoid getting ripped off by dishonest entrepreneurs and publishers. (It is also, I should point out, possible to be swindled by honest, well-meaning folks. It may even be more prevalent and it's often more maddening.)
I'm going to write more on this topic. One of these days, I hope to do a long post about little psychodrama tricks that are used to manipulate creative folks…like the old "I didn't think you were just in it for the money" line that some try when you ask for the money. In the meantime, keep an eye on the blog of the wise and talented Colleen Doran, especially this recent posting. I did a panel at WonderCon with Colleen about such matters and I'm sure her words taught at least a few attendees things that will prevent them from being bilked.