Tweet from Tumblr
We’re testing Twitter integration on Tumblr. You can set it up by going to the special address: http://www.tumblr.com/settings?twitter
This will automatically send your Tumblr posts to Twitter (you can toggle this when posting). If you have people following you in both places, it’s an easy way to stay active on Twitter, or just to let your Twitter followers know about your Tumblr posts.
If you’re like us, and only follow a few people on Twitter, you should try enabling “Show Twitter updates in my Dashboard" to get all of your friends’ updates in one place.