Tumblr debuted in 2007, but it wasn’t until 2011 that it exploded in popularity. According to comScore, Tumblr grew from 4.2 million visitors in July 2010 to 13.4 million visitors in July 2011. That’s a 218% increase in 1 year.

While the vast majority of Tumblr users are young, it’s safe to assume people from more diverse age groups will give Tumblr a try in the near future. Currently 50% of Tumblr’s active users are under 25 years of age.

Are you using Tumblr yet? If not, you can follow the links to learn about Tumblr features for bloggers and how to make a free blog on Tumblr.

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• Tumblr Users Can Now Publish Animated GIFs as Photo Posts
  In case you missed the news, Tumblr photo posts now support animated GIF files up to 1 MB. Now, Tumblr users can publish animated GIFs quickly and easily! You can see it in action in this photo post ...
• Tumblr Users Can Now Publish Animated GIFs as Photo Posts
  In case you missed the news, Tumblr photo posts now support animated GIF files up to 1 MB. Now, Tumblr users can publish animated GIFs quickly and easily! You can see it in action in this photo post ...
• What’s So Great About Tumblr?
  Tumblr is a cross between a blogging tool and a microblogging tool that makes it easy to publish quick content and share that content with other users. However, Tumblr is still very confusing to peopl...