Blekko banned 1.1 Million Sites from Its Search Engine

It seems that every search engine is having a cleanup. Recently Google has updated their algorithm by giving a boost up for some websites and a downfall for someother as per the quality of the content. Now Blekko is a going a step further by banning 1.1 million websites from its searches. They had already removed around 20 websites including eHow, Answerbag (Demand media), but the main difference between Google and Blekko in updating the algorithm is that while the former had sorted the websites based on the content by demoting the sites,  Blekko removed them completely, so that it will never ever appear in Blekko.

Blekko announced on their blog that they have brought out this change with the help of ‘Adspam algorithm”  and claim that this algorithm is the first of its kind to find spam rather than rank results. The algorithm is designed to identify pages which are spam and abolish before they appear in search results. They have given an explanation about “Adspam” algorithm in their blog. It says that “is a machine-learning algorithm that examines pages for a specific spam signals — the presence of multiple display ad positions on a single page and thin to zero content. Unlike algorithms used by other search engines, AdSpam is being used in conjunction with human curation to detect to continue the War on Spam.

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