Just in time for Posterous’ closure on April 30th, a service has launched to bring Posterous blogs over to rival service, Tumblr. JustMigrate was announced the same day that Posterous unceremoniously called it quits via its blog. The service requires you to punch in your posterous URL, authorize it with Tumblr, and you’re all set. For those with multiple Tumblr blogs, granting… → Read More