A Massive Solar Flare Of Activity Pushes Tumblr To 400 Million Pageviews A Day

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Last month, founder David Karp noted that Tumblr was now seeing over 250 million pageviews a day. As we noted, that was incredible since as recently as July of 2009, they were seeing 250 million pageviews for the entire month. But it turns out that the numbers are much more incredible than they first appeared.

I noticed this when Tumblr President John Maloney posted earlier today that Tumblr was now doing north of 8.4 billion monthly pageviews. That number was around 7 billion just a month ago, and when I drilled down into Tumblr’s publicly available numbers on Quantcast, I noticed a massive surge in pageviews in the last few weeks. So massive, in fact, that the data looks more like a solar flare.

So what happened? It turns out, there was a bit of a bug in Tumblr’s data previously — one that led Quantcast to undercount pageview data. “Last week we noticed a growing discrepancy between our Google Analytics and Quantcast numbers. It turns out that we broke our Quantcast tracking code a few weeks ago and were no longer reporting any impressions past page one of the Dashboard. We fixed it and quickly saw the Quantcast data jump up to near symmetry with GA,” Karp tells us.

So what does that mean for Tumblr’s numbers? Well, throw that 250 million pageviews a day out the windows. Last Thursday, Tumblr hit 400 million pageviews for the day, Karp tells us. It’s close to 5,000 pageviews a second, he notes.

Karp credits international growth and faster response times to Tumblr’s amazing trajectory. Maloney is more specific. “Tumblr’s growth the last few months has been remarkable, overshadowing everything in the past. It’s coming from all over the globe and across all demos, in particular teenagers,” he says.

Both men are also quick to credit the Tumblr engineering team which has been handling the load after downtime problems earlier in the year.

With the new data, Tumblr is now one of the top 25 sites in the U.S. according to the data Quancast tracks.

[image: flickr/nasa]