For the person on the desert island that hasn’t yet heard about the most recent PR update and how it’s supposedly due to Google penalising link sellers and buyers here’s a few links to interesting posts:

Forbes article that’s a few days old but interesting “background” reading (hey, it’s a fast paced industry!)

Andy Beard’s detailed look at the directories affected - good cause he tracks the directories’ PR over time

ShoeMoney’s short but sweet post - please follow the links to find out what NOT to do

Some Musings from Search Engine Journal - I love the quote, “PageRank is not a Marketing Metric”. Perfect!