As a result of this absence of assurances and also certainty, a company that relies heavily on internet search engine traffic can suffer major losses if the internet search engine stop sending site visitors. Online search engine can change their formulas, affecting a web site's positioning, perhaps leading to a serious loss of website traffic. According to Google's CEO, Eric Schmidt, in 2010, Google transformed 500 formula changes-- practically 1.5 per day. It is taken into consideration a sensible service technique for web site drivers to free themselves from reliance on internet search engine web traffic. Along with ease of access in terms of web crawlers (resolved above), customer web availability has become increasingly vital for SEO.