Roberto Sanabria, the StumbleStats Ninja for the company, detailed the activity of StumbleUpon users on the company's blog Tuesday. According to Sanabria, mobile stumbles hit a record around 6:50 p.m. PT, right before the Super Bowl ended. At that point, mobile stumbles hit a rate of 41 stumbles per second, which was 10% higher than the company's previous peak. But overall, the vast majority of stumbles during the entire game were via desktops and laptops.
On the blog, Sanabria speculated that users may have been stuck in their living rooms and away from their computers, accounting for the relatively high number of mobile stumbles.
StumbleUpon launched an iPhone app last August. Mike Mayzel, a spokesman for StumbleUpon, says that mobile traffic for the site grows 30-40% a month, but overall mobile still accounts for a relatively small amount of overall stumbles — in the single digits, percentage-wise.
Elsewhere, users' activity during the game appeared to be what you might expect: People stumbled less during the game, especially towards the end and during the halftime show.
