To the Tumblr refugees: welcome!
Having been on the Internet for over thirty years, I have one piece of advice for creative folks working online:
Control Your Platform.
Don't build a business around Facebook, Tumbler, G+, Geocities, MySpace, AltaVista, or any of these other third parties that claim to offer quick and easy results.
They all go away. Every one of them.
Build your own site. Use third parties to steer people to your site.
Third parties are the devil--useful devils, but devils.