The problem has arisen after Google paid Unruly Media, an international media agency, to get a number of paid bloggers to promote a video for its Chrome browser featuring a US flour company.But while the bloggers did the job they had been asked to, and put up the video, some went beyond what Unruly Media – and Google – had expected them to, and included links to places where you could download the Chrome browser. Crucially, though, they didn’t use the “nofollow” text that Google mandates for paid links. That, strictly, took them over the line on paid links.
http://www.guardian.co.uk/technology/2012/jan/03/google-ban-browser-indexAlso see:Google Demotes Chrome in Rankings After Paid Bloggers Promoted Web Browser
Google Inc. demoted its Chrome browser in Web-search rankings after an advertising effort for the tool ran afoul of its own rules governing paid promotions.The company is “taking manual action to demote” Chrome and lower its ranking for at least 60 days, Mountain View, California-based Google said yesterday in an e-mailed statement.
www.bloomberg.com/news/2012-01-03/google-denies-authorizing-bloggers-to-promote-chrome-browser.html