Back in November, Google made some changes to their web indexing system. Google makes about 500 updates a year, but this update had an effect on about 35% of searches, and became known as the ‘Freshness Update’.
The purpose of this update was to give users much ‘Fresher’ results, meaning sites with newer content, would automatically be ranked higher. However, this doesn’t mean you can just keep making slight changes to existing content; Google is looking for fresh content only...