StumbleUpon Explore Box Performance

After rolling out a beta test earlier this year StumbleUpon is formally debuting a new search feature called Explore Box.

• StumbleUpon Explore Box lets users search a more narrow or granular stream of content within many different categories.
• Previously, you could only explore the web using StumbleUpon within certain sets of around 500 topics. 
• With the explore box, you now have the option of viewing StumbleUpon content within hundreds of thousands of much more granular interests
• Almost any keyword can be explored as it were a topic
• Indeed SEL goes on to explain that the Explore Box is limited to finding pages that have been tagged by users - a lapse noted by early adopters that apparently hasn't been completely corrected.