Drop in Chrome’s market share: due to Google’s penalty?

Google Chrome dropped 0.17% in January after 17 consecutive months of gains in market share. Why? The company that tracks browser market share suggests that it’s due to Google’s penalizing Chrome after its messed up, sponsored blog post campaign.

Net Applications, the company that released these figures, says it tracks about 160 million unique visits per month to a worldwide network of more than 40,000 sites.
Their data also shows Firefox and Safari seeing market share losses in January. The browser experiencing gains in January was Microsoft’s Internet Explorer. IE gained 1.09% in the first month of the calendar year, its biggest monthly gain in at least two years.