You'll find your content will build rank on your own unique domain rather than an extension of Tumblr's domain.
WordPress have now made this very easy as they have included the tumblr import tool into the latest version of WordPress 3.3
Free Tumblr To WordPress Migration
Don't forget we offer a free set & migration service from any free hosted blogging platform to your own self hosted WordPress.org powered site.
In this tutorial for WordPress beginners, i'll show you step by step, the easiest and best way to import all your Tumblr content into your own self hosted WordPress.org powered blog.
Create a New WordPress Blog
The very first step is to create a WordPress blog
You may also find my free Guide to Getting Started with WordPress helpful.
Installing Tumblr Import Tool
Once you have installed WordPress to your web server, login and navigate to the Tools section in the left hand side bar of your WordPress admin panel or Dashboard.
Click on the Import link under Tools
Once you've clicked on the Tumblr link you'll need to click Install Now
After you click Install, you'll need to click the Activate Plugin & Run Importer link as well.
After you have activated the plugin, you'll need to enter you Tumblr login details including email address & password.
Once you have entered your Tumblr email address & password, click the Connect to Tumblr button.
Once you have clicked the Connect button, you can select which Tumblr blog you wish to import if you have more than one like me.
Otherwise, click the Import This Blog button under the Action column and you'll then see the button change to In Progress.
Importing your Tumblr blod posts to WordPress can take some time as Tumblr's servers are often overloaded so check back later.
If the import fails for some reason, click the Clear Account Information under the Restart section and try again.
Video - Tumblr to WordPress
Tumblr have some awesome themes to choose from however those themes are now becoming available for WordPress self hosted bloggers as well.
Why build up domain authority and links to a Tumblr extension when you can build up links to your own domain on the worlds most popular free blogging software, WordPress.
Moving Tumblr to WordPress has never been easier.