Google Altered SERPS For EVERYONE Now

Previously you only had altered search results if you were logged in, but now everyone will get it. I'd love to know at what level they'll be implementing this, i.e. what at what level will your results be changed, will it be only if ever search session incorporated a visit to a particular site, one in two, one in four ....

It's going to make life very interesting for SEOs as their rankings will push up client pages and you won't be able to do anything about it, apart from keep clearing out your cookies - or use SEOMoz's Rank Tracker.

Find out more at the official post: Official Google Blog: Personalized Search for everyone