I’m excited to see where Automattic takes Tumblr, but even today there are already several Tumblr-related features built in to Micro.blog. Here are a few ways that Micro.blog can integrate with Tumblr.
Follow Tumblr users on Micro.blog: Micro.blog tries to play nicely with the rest of the web, so you aren’t limited to just following Micro.blog users. To follow someone’s Tumblr blog, on Micro.blog click Discover, then click the search icon, and enter their Tumblr domain name:
Click on the Tumblr user to preview their posts and follow them. Now when they post to their blog, those posts from Tumblr will appear in the Micro.blog timeline. Short posts, photo posts, and art from Tumblr look great in Micro.blog.
Add your Tumblr feed to Micro.blog: If you actively post to Tumblr and also have a Micro.blog account, you can add your Tumblr RSS feed to Micro.blog so that when someone follows you on Micro.blog, they see posts from both your main microblog and your Tumblr blog.
Click Account → Edit Feeds & Cross-posting, then paste in your Tumblr RSS feed:
Import your Tumblr blog to Micro.blog: Maybe you no longer maintain your Tumblr blog and want to move your old posts over to Micro.blog. First, export your posts from the Tumblr dashboard. That will give you a .zip file you can import into Micro.blog under Posts → Import.