I run a particular site which turned over about three hundred thousand euro last year. It has a PR2 and has done for the last year or so. It has a few hundred very relevant back links and solid traffic (growing about 50% y/y). About 1 month ago, I built a soon-to-be-launched 'sister' site which sells similar products but targets a different geographic location. The site has no, i.e. zero inlinks, no traffic but benefits, as a result of this recent update, from a PR3. If anyone can explain that to me, I'd be eternally grateful.