i've had experience using the strategy described above... results will come quick (within days of really nuking the world) and last 3-12 months on average, then will level off to a place where you still have more traffic than someone who spent the entire 9 months trying to scrape visitors together. I've gotten to rank 1 and a million visitors a month for some incredible terms using the strategy above. recommend you spend a lot of time reading and preparing and planning out how you will build the tiers to look as organic as possible and pass as much juice as possible then phase in nukes over a period of time. If you do this right after you launch a site / domain google can easily mistake this for a very trendy / popular new site in a vertical/niche. EZPZ $$$