- StumbleUpon reaches 25 million users, plans to localise in Europe Content discovery engine StumbleUpon reached 25 million registered users this week, growing from 5.5 million just three years ago, according to CEO Garrett Camp who spoke to TechCrunch's Anthony Ha.
- StumbleUpon upgrades Facebook Timeline app to include frictionless sharing StumbleUpon has become the latest service to enable Facebook frictionless sharing via an update to its Facebook app. Now, Stumblers can decide to share all their StumbleUpon activity seamlessly to Facebook Timeline.