Yesterday I was sifting through some of the recent emails I've received from marketing guys pitching the latest revolutionary product. I restrained my delete finger long enough to take a close look at Jack Humphrey's Social Power Linking.
This is a bunch of materials about using Web 2.0 sites for marketing and traffic generation, which were turned into a membership site. The site contains tons of reports, audios and videos as well as a members forum where you can share ideas and insights.
With all the materials available for downloading right off the bat you get your $29/mo back in about 5 minutes.
I haven't had time to absorb many of the materials, but I did take a look at the overview of StumbleUpon called "StumbleUpon Traffic Stampede". This is exactly what I needed to help me figure this site out without spending hours and hours to get going. It describes how SU works and what you should and should not do to get involved.
There are similar reviews for Digg, Delicious, Propeller, Squidoo and others.
As with all the Web 2.0 sites, it's all about content and participation, and these reports make that perfectly clear. They are not guides describing how to spam social networking sites. Quite the contrary. They describe how to network, make connections, get your own material noticed, and so on.
I highly recommend Jack Humphrey's Social Power Linking.