StumbleUpon is responsible for 50% of all website traffic generated by social media. Facebook drives 37%, Twitter just 3%. Yet many marketers do not have a strategy for the social site. Some don’t even know it exists.

What is StumbleUpon?

It’s a “discovery engine” that asks a consumer their interests, then sends them to web pages it thinks they will like. The Stumbler gives each page a thumbs up, a thumbs down, or decides to share it. The discovery engine uses this feedback to get smarter about future recommendations.

Who Stumbles?

18-34 year olds are the biggest users. Men and women are equally likely to engage with the site.

How can marketers leverage StumbleUpon?

There are a variety of ways to market via StumbleUpon including their relatively new Paid Discovery option.

How big is it really?

This summer, StumbleUpon reached 1 billion (that’s with a “b”) Stumbles per month. Over 40% of users are active every day. Click here for more fast facts.

StumbleUpon is surprisingly addictive, especially for consumers who are curious and like to be “in the know.”

• Should StumbleUpon be part of our marketing strategy? (Hint: the answer is “yes” if our target market includes people under 35.)
• Should we test StumbleUpon’s Paid Discovery service? Like most digital media advertising, tests are inexpensive.