Im sure someone has already thought of this, which is why I'm curious and want to run it past all of you just to make sure. Imagine actually being able to scrape up about 1000 google passed proxies (which unless you buy private is near impossible and this will only work if they are from diverse subnets). Take your 1k proxies and get them to visit your tier 1 links (directly or with a modified ref string) now take about 700 of those proxies and get them to visit your money site (which has google analytics installed). Stretch this process over about 2 days (to make it seem like viral traffic) about 70% on day 1 and 30% on day 2. Surely google would take note of this influx of traffic flow and build PR for the links no? Again, please don't crucify me lol, I think I must be wrong since I have not heard any talk about this simple idea.