Use GoDaddy Domain with Tumblr
Login to GoDaddy’s Domain Manager
Select the domain name you would like to edit
Set Nameservers to “I want to park my domains.”
Enter Total DNS Control
Edit the A (Host) record for Host Name ‘@’
Enter Tumblr’s IP address (72.32.231.8) as the ‘Points to IP Address’
Go to http://www.tumblr.com/customize and setup your custom domain in the Info menu
Enjoy (or wait for [...]