Sponsored Link Impressions Grow by 16 per cent

According to research from Nielson/Net ratings Google and Yahoos sponsored link impression grew 16 per cent. Impressions served by Google and Yahoo! together grew from 55.4 billion impressions in August of 2005 to 64.3 billion impressions in January.
Courtesy ClickZ. Search impressions increased by 55 per cent over the last year.

Google Page Rank Update Feb 06

Looks like Google is doing another page rank update. I am reading various postings around the web and on webmasterworld there is a chat going on about it. Seems like it is getting harder to go up a level in PR, i.e. from say 2 to 3.