An online community where you can share your interests freely. The content can range from normal (recipes, gardening, certain fandoms, etc.) to questionable (seriously, certain Tumblr users have invented like 82 genders).
Teen: Dad, I finallyfigured out what my gender is. I'm trans-demi-aporagender.
Dad: Let me guess, you've been on Tumblr.
It's the best thing ever invented:
Tumblr is hated by facebook users but only because they think it's too complicated for their tiny brains. If you have one; Your most likely Awesome, Indie, Hipster & Awesome. We're just one big happy family :'D
Facebook users; fuck off.