Google Penalizes Itself for Paid Links About Chrome - Internet Explorer Gains Share.
On January 3rd, Google dropped the page rank for the Chrome site to zero (from nine out of 10). This means the Chrome site no longer ranks highly on searches and displays fewer ads.
This was in response to Google violating its own guidelines against paid links. An ad agency Google uses created paid links in order to promote Chrome. According to Google, they were unaware of this.
In January, the upward trend for Chrome halted and Chrome lost .17% share on the desktop. Internet Explorer gained 1.1% and Firefox dropped 1%.