Search Engine Optimization is beyond building links. Your strategy should be such that there is constant flow of traffic to your sites. I control the traffic to my sites at my whims and fancy, and can have 600 hits to my site within 10 Minutes, Worst still -I can have 10000 hits to a brand new site in a minute. Remember the dialogue from "Speed" -"A Bomb is meant to explode; Your life is a waste, because you have been trying to stop explosion."