In this update my backward links that I get for link: www.mydomain.com went down from ca. 2,500 to 1000. Also the backward links of westmasterworld went down - although not that dramatic. I randomly analyzed a bunch of about 200 articles on my web site. They are all imbedded in the same navigation structure and have PR 4 or 5. The internal pages (index pages) that link to them have PR 5 or PR6.
The article pages with a PR of 5 show the internal backward links. But those with PR4 show zero backward links.
This might just be another display rule for Google. BUT the pages showing no internal links SEEM to do less well in ranking. I am not completely sure about the negative effect in ranking, because most of these articles are not in a very competitive environment and other factors like a higher weight on title in this update might fool me.
Can anybody of you give an explanation? Has anybody made a similar observation? Thanks for your feedback in advance.