Google is probably already do that, which is why the current traffic-generation methods advice is along the lines of varying anchor text. This is done mostly b

Google is probably already do that, which is why the current traffic-generation methods advice is along the lines of varying anchor text. This is done mostly by identifying related / tangential / complementary / supplementary keyword terms to the resource linked to. Non whitehat SEOers are wising up to the idea of a site targetting niches, and that considerably widens the list of appropriate keywords. By tackling the long tail keywords en masse - these are less competitive, easier to rank for, and correlated better to buying intent; gradually they make significant inroads to ranking strongly for the big-head keyword in a manner that looks more natural.