Perry Marshall has done it again. If you are still hazy about how fits into your marketing mix, please check out this VERY thorough walkthru of how all the pieces fit toher. Even though this is from the fall of 2011 there is still a ton of very relevant info here. I have kept the video full sized so you can see everything, and for me, this has answered a lot of questions. I think even those of you crushing it on , will learn something. If not tell me I'm wrong. It's worth reading for its salesmanship. Another thing I liked was a great tutorial on how to properly evaluate and analyze the the expenses versus the income so you can see if a campaign is really paying off.