Categorizing Posts on Tumblr

Did they ignore NSFW categories?

What exactly is that "gif art" category? Do they mean...

• actual art in the medium of gif, like this? http://hexeosis.com/gif01/

• really just short videos with sound, i.e. "people sharing Vines on Tumblr"?

• subtitled clips from TV shows?

Those would all suggest very different business strategies Tumblr could pursue.

• The first means Tumblr's userbase is really just trying to use it "as if it were" Pinterest (i.e. "aesthetic blogging.") Tumblr could embrace and monetize that, but it would require a pivot that would probably remove (what many would see as) vital features from the site.

• The second means Tumblr's content spread is really just a reflection of the relative popularity of video-sharing services like Vine and Snapchat and Instagram among Tumblr's age-bracket[1]. Hard to monetize; it basically means Tumblr is just used for sharing things created elsewhere.

• The third means a set of Tumblr subscriptions essentially satisfies the same need that watching Entertainment Tonight does: seeing little highlights of everything that's come out recently, maybe with responses. Tumblr—or really, Yahoo—could certainly monetize the heck out of that, but they'd have to have some humility to do it: Tumblr, in this use, isn't an audience to advertise to, but rather a huge set of content creators you can advertise and cross-promote.

[1] http://www.statista.com/statistics/199242/social-media-and-n...

So from the charts I see that tumblr is best used for gifs and astrology, maybe even gifs about astrology. This should be followed by hipster fashion and gossips. Social media at its best.