The Catalysts Behind Google's Evolution
Google's approach to quality search is, at best, reactive. Updates in algorithms wouldn't have been possible without catalysts. Google's legal tussle with Search King in 2003 is just one of many (where Google won). Below are some search engine feature updates and the reason for their immediate implementation. Nofollow Nofollow enables websites to instruct search engines not to follow any links. Google created this feature in response to the vulnerability of online comments to links; something like a back door for excessive linking, which is now frowned upon. When link spamming refused to stop, Google webspam guru Matt Cutts required nofollow for PageRank-compliant links.