http://jetpack.me/support/publicize/tumblr/
We are now using this jetpack plugin to crosspost to tumblr, so here’s our first test post with it.
Tumblr Crosspostr just didn’t work and would throw up a bunch of oauth problems — one of the things about gamedev is how long all these little minor errors and issues take and aggregate into a giant snowball of wasted time, so anything we can do to cut down on that is worth looking into.