Forum Moderators: open
link popularity. Most sites showed only a fraction of
their true backlink count. The result is a general
reduction of pr. Previous the backlinks shown on Google had to be resulting from page with a minimum of pr4. Well, with the current update this has changed so that lower pr links are now showing.
Let's look at why Google had to do this.
First, the effect of Dominic was a complete reduction
in pr. Let's say you had 1000 links (100 pr 1, 200 pr
2, 200 pr 3, 400 pr 4, 100 pr 5) According to Google
before Dominic you would have 500 backlinks. However,
if Dominic reduced the pr of the linking pages the
value of the links would be the following (300 pr 1,
200 pr 2, 400 pr 3, 100 pr 4, 0 pr 5) Suddenly you
have only 100 backlinks. As the effect spreads pr
drops from sites which you link to and so forth.
Eventually, the effect is continuous drop in pr.
How does Google combat this? First show pr2+ pages as
backlinks and give bonuses as if they were pr 4
links. Hopefully re-build lost pr.
It believe what we are seeing is Google's attempt to
keep pr alive, because Dominic almost killed it.
I would love to hear others theories as to what is happening with Google.
Evidence - PR4 is the threshold for seen Google backlinks, the fact that PR3 - PR1s or being seen here tends to reflect that they are in fact PR4 or above links and something is missing.
Be patience, things are changing but normally they change for the betterment of all.
I really do hope it's the end of the PR4 threshold. People get to greedy when it comes to PR and exchaning links with another site that doesn't have as much PR. I really gets out of hand sometimes.
Don't forget in Google's eyes the whole internet has a PR of 1 which gets shared amongst all the pages, so if Google had less pages indexed in the Dominik update, the total pagerank still has to add up to 1. It would just mean less pages - not less pagerank.
Google has just been crawling poorly, so PR isn't assigned as accurately as it was previously (or ideally should be). Somebody still gets it though.