Sgt_Kickaxe - 9:19 pm on Jun 14, 2010 (gmt 0)
A site full of keyword targeted articles, each page targeting it's own keyword, is no longer effective. If the site isn't about keyword the page won't rank for longtail->keyword and it looks like number of times (%) the keyword is used elsewhere, along with location/relevance, is a major consideration. exact match titles are out too on longtail.
Matt Cutts made mention of these things in his latest I/O website review youtube video, about 25 and 35 minutes in.