One of Tumblr's differentiators is allowing adult content. It's very hard to find places friendly to that when you're looking to distribute your artwork and get a following going.
Thankfully more and more websites are based out of other countries now and don't need to swim in the puritan current of the US.
Thankfully more and more websites are based out of other countries now and don't need to swim in the puritan current of the US.