StumbleUpon overtakes Facebook as top social-traffic source StumbleUpon has toppled Facebook as the top U.S. source of social referrals, according to data from StatCounter. The social service last overtook Facebook in February before swiftly falling [Continue]

How Twitter ate MySpace’s lunch There are plenty of reasons for MySpace’s fade — technical troubles, bad PR, intrusive advertising and security issues — but one of the site’s biggest problems was the emergence of more [Continue]