Immediate Edge
I have recently joined a membership site called Immediate Edge. The concept is different to most mentor sites as the idea is show members real live projects. You can look over the shoulder and also join and see how internet businesses are built from inception to conversions.
At the moment there are two main projects, the infoproduct and viral. The first project is in a very competitve market and the second is the development of an application in Facebook.
I recommend you follow along as well and you can get all the details at the immediate edge.