We run a couple multi-author wordpress sites, much like a News, Magazine type of wordpress site. We are looking for a good multi-user plugin that can help keep their roles assigned, give them contributor photos, bios and their own section to keep track of all their post, but also we would like to be able to see which post get the most traffic on our site and which contributor gets the most traffic on their articles as we do a revenue sharing based on the articles with the most traffic. Any ideas?