doc_z - 6:27 pm on Jul 20, 2006 (gmt 0)
How can you tell that PR is not passed on?
I have many reasons for this theory. For example, I have a new website which has several links from Wikipedia. Before the PageRank update I expected PR3 if Wikipedia links are not counted while it should be PR5 if they are counted. The pages have now PR3.
But I can't see why Google would block Wiki links.
There are two possibilities: either Google added some kind of devaluation of external Wikipedia links 'by hand' or Wikipedia is handled as any other website and is just affected by some part of the algorithm. (e.g. due to the removal of the nofollow attribute it might seems for Google that millions of external links are added at the same time which might trigger some kind of filter)