martinibuster - 5:39 pm on Apr 23, 2010 (gmt 0)
Now it's Google and their page rank.
As wheel mentioned, it's been refined and is actually far more than just PageRank. Peter Sorivig of Google explained that PR is just one of many metrics used to rank sites. So it's not just PR and the algo has already changed many times and is still evolving, including the role that links play.