The Writer’s Workshop group in England asked numbers of professional writers a varied list of questions about their publishers. Some great information in this survey, and information that should scare hell out of traditional publishers.
One interesting thing on a topic well-loved here, and that is the writer knee-jerk reaction that they must have an agent. Take a look at the data on that question. If that does not prove the point we have been saying here that you don’t need an agent, nothing will.
Take your time, read through the data. Wonderful stuff and clear charts to read.