theskinnycity.tumblr.com is basically a demented teenager insulting herself and the tumblr community.
This blog does what they call "thinspiration," but really just depresses, offends, promotes anorexia and abuses teenagers to think that they're fat, they're not beautiful enough if they're not thin.  They have pictures with captions like "You will be FAT if you eat today,"  "Don't eat!  Do you want to stay fat?" and "Hunger hurts, but starving works."
Many people have complained about this blog, and it should be terminated.