Do the Google algorithm changes have your head spinning? The folks over at Outrider. Everything that has occurred since 1998 all the way to present time is featured in this visual infographic piece.
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I’ve just discovered new-Colibri Tool http://colibritool.com/ It can track your website position on Google and what is interesting-it can find your competitors or even suggest it,also monitors Twitter Mentions, Facebook Mentions, Google PageRank and Backlinks to your website! really good one-highly recommendation!