Who Pays Photographers? is a recent Tumblr inspired by the efforts of Manjula Martin and his site Who Pays Writers?. It exists as a curated space to anonymously share the levels of remuneration and usage terms of clients world-wide. They are even providing a regularly updated spreadsheet with the details included. Obviously each situation depends on the individual photographer, but as the site states, the more submissions received, the better the picture they can develop.
No doubt, there will be conflicting reports. Outlets play favorites and situations vary. Still, the more data points, the fuller the picture for everyone. If you have a differing account of a particular client, feel free to add your info.