More than 50% of our members joined via viral invites -- from emailing friends, twitter posts, facebook posts, etc.
We think it is because of the social tools we weaved into our site + the social nature of design itself.
We think it is because of the social tools we weaved into our site + the social nature of design itself.
Facebook is far and away the most powerful way to target people socially based on actual interests (likes) vs. just casual searches (goog).