Since its inception PageRank has suffered from many theoretical fallacies and problems.

Rather than beating a dead horse, Orion enumerates some of these, followed by research papers that attempt to fix these. This approach may benefit those interested in researching the corresponding subjects.

in SEW forums

Google is updating the backlinks reported by the link:URL command. This is not really a Google Dance because the PageRank is not changing (the last PageRank update was on January 1st, check out the Google Dance History).

If you want to analyze your backlinks right now, try our backlinks checker on all data centers tool.

This kind of update has no effect on rankings.