Just came across a Webmaster Forum that is fairly new, but looks very promising, there is a lot of use full threads covering a lot of topics on how to make money online, I read through a few and have to say that they are very in depth. The forum includes topics such as Monetizing Your Website, Advertising Space, PPC Advertisers and many more.
When signing up I noticed that there is room for your AdSense ID, meaning that you have a chance of getting a 50-50 split in revenue, something like what some other forums do.
Another thing I liked about the forum was that it had a link exchange section, something I like on related forums, but most don't have.
It's packed full of in depth articles on monetizing your website or blog and it's definitely worth checking out.