Matt Cutts had mentioned earlier this month on http://googleblog.blogspot.com/2011/01/google-search-and-search-engine-spam.html – “we’re evaluating multiple changes that should help drive spam levels even lower, including one change that primarily affects sites that copy others’ content and sites with low levels of original content.”
He confirmed on his personal blog http://www.mattcutts.com/blog/algorithm-change-launched/ that the Google Algorithm has been updated and live now to prevent content spam.
Matt Cutts has also posted about this update on http://news.ycombinator.com/item?id=2152286
Before this announcement also there were many SEOs who were discussing about the effect on the SERPs http://www.webmasterworld.com/google/4258897.htm
Bharati Ahuja is the Founder of WebPro Technologies LLP, an SEO and digital strategy company she established in 2001. With over two decades of experience in search engine optimization, digital marketing, and ethical web strategies, she has been at the forefront of helping businesses build sustainable visibility online.