Tumblr is more than a play by play of what you are doing through the day. A person can post lengthy blogs about a subject or simply post a photo. Twitter is just a brief comment, similar to facebook, but shorter and with pix. Tumblr is for blogging, there are no content restrictions, so many blogs are for 18+, so nude pix and gifs are allowed. Some people have xxx twitter content, but it's less common maybe? Not sure. I use all three but for different reasons. I follow Drag queens and porn stars on twitter, facebook is for my friends, and I find porn on tumblr. However, I also follow blogs on twitter, but those are links to blogs. But I like to keep my content separate. LOL. For instance, I follow
Broke Straight Boys on Twitter, but not on facebook, since my family and friends don't necessarily need to know I like gay porn, certainly, my sons don't need to know that! But my family doesn't follow my twitter. And then, like I said, there is a ton of XXX content on tumblr. You can choose a category you like. For instance, if you like hairy men, there are blogs that have nothing but hot pix of hairy men. If you like big cock, you can search for that. And you can do all of that completely anonymously on Tumblr.
Who wants to add or amend?