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Do you know if your website is up right now? We do! LEARN MORE about to hit 20 million blogs. Tumblr in hot pursuit. blog counter, the popular blogging service from Automattic built on top the world-famous WordPress software, is about to hit another major milestone: 20 million hosted blogs.

Now on to the insane part: Tumblr, which has to be considered a relative newcomer on the blogging scene, has now almost caught up with The difference between the two is currently just 1.5 million blogs, and that is shrinking fast.

That is all the more impressive when you consider that things are going great for Automattic’s service hosts twice as many blogs now compared with the same time last year. Going from 10 to 20 million blogs in a year is awesome work, but Tumblr is just growing like crazy.

The past five months for and Tumblr

Here’s how things looked like back in December of 2010:

wordpresscom and tumblr dec 2010

Compare that with the situation today (May 10, 2011): and tumblr may 2010 is still ahead, but Tumblr is right at its heels. In the same amount of time, Tumblr has grown almost 2x as much as (absolute growth, not relative). As we said, impressive.

Final words

WordPress was started in 2005, Tumblr in 2007. Despite that two-year head start for, the two services will soon be on an equal footing in terms of the number of blogs they host. It also looks like Tumblr’s momentum will carry it past within the next couple of months.

We suspect that part of the explanation for Tumblr’s rapid growth is its different approach to blogging, using a model very suitable for microblogging or lifestreaming, while is more old school, targeted at “traditional” blogging. Tumblr may simply have a wider appeal.

The big challenge for Tumblr hasn’t been to grow, but to grow gracefully. There have been significant growing pains while they have tried to scale the service to meet demand. This culminated late last year but has since improved, although our monitoring (via the Pingdom uptime monitoring service) shows that Tumblr still has occasional issues handling the massive, and continuous, increase in traffic.

That said, big congratulations to both services are in order. Both teams are bound to be working their collective rear ends off. Running a fast-growing service at this scale is challenging work.

Data sources: Tumblr and (Automattic).

No Comments

The numbers above fail to include the sites that self-host WordPress, however. It appears that WordPress runs 14% of the top 1,000,000 websites out there (cite: ) and one could probably extrapolate to the overall number of sites that run WordPress, which is way higher than just the hosted sites on

@Christopher Carfi: We didn’t include self-hosted WordPress (i.e. because this post was about the hosted service that Automattic runs. For what it’s worth, there were 16.7 million self-hosted WordPress blogs last December (Dec 2010):

I think that wordpress offers more options than Tumblr and we can found more templates, plugins to customize than with tumblr. the power of tumblr resides in simplicity (easy to use).

It´s not difficult to understand, wordpress cms system is very powerful and very user friendly.

It would be even more interresting to know how many of them are actually still updated on a regular basis, and how many are not just search engine spam.

Mammaaa mia!! We’re getting crazy with blogs, no matter the CMS (even if i’m a big WP fan). Anyway it’s time so that the big companies behind the CMS/Searches/such start deleting/de-indexing unuseful information on the net and that includes blogs, because, how many of those 20M wp’s are just spammy,past time dependant or just dead since long time ago? :|

Amazing digits…