Eurekster is a search engine with personalized results that works just like word of mouth.

First formula: you create a “Friend Group” by registering and inviting friends to use it. When one of them makes the same search as you, your preferred result appears on the top of their list of results. Each learns from the search activity of people they know and trust.

Second formula: SearchGroups focus the search by area of interest and share searches and sites with other users having similar interests. This time, the user doesn’t mix Jennifer Lopez fanatic friends with his work searches and sites.

Now, big actors like Yahoo, Microsoft or Google are jumping on the bandwagon too.