f @
#1 689
of 43 150 Companies
< what's the formula?

StumbleUpon

StumbleUpon is the Internet’s only web discovery service that allows people to discover great websites recommended by others with similar interests. With a single click, users may ‘stumble upon’ high-qualitycontent matched to their personal preferences. Originally launched in Calgary in 2002, StumbleUpon’s goal is simple: help people discover interesting or informative web content that they wouldn’t have thought to search for.

... more on Wikipedia