I have my business site (2y/o), about 60 money sites and few sites I use for testing and stuff. My business site is all white hat, I do a little backlink exchange time to time but nothing major and got it on 1 page in G for few related KW My money sites are white hat, don't do much except adding a few article here and there. My testing sites gets all the stuff I read here, from tier 1 and 2 SB blasts, social bookmarking, fiverr gigs, etc... Those testing sites don't go very far. I even made a social bookmark on my business site to lose it to page 3 in G. First time I did something for it. Then I made my wife's site in 30-35 minutes, pure hand coded html/php 2 pages with content and a couple of pictures + a checkout for her products. It's a EMD.com and boom, solid (above amazon for that product) #1 for that KW and #5 for base KW. Didn't do nothing, no backlink, no bookmarking, no nothing... The less I do, the higher in SERP!!