Mobelux, the guys behind the stellar Tumblr iPhone app are also the masterminds behind Tumblr BlackBerry. That means that the same attractive interface and robust feature support from the iPhone app is now available to CrackBerry addicts alike.
Tumblr is hosting the app so that you can download it directly to your device. BlackBerry Storm 2 owners might have some issues, but Mobelux developer Jason Emerick has the solution posted on his blog.
The app supports different post types, saving drafts, and publishing options including whether or not you want to also send out the post to Twitter. You can send images from your library directly to Tumblr (just like the Flickr for BlackBerry app) and select pre-existing videos or record new video directly from the app itself.