BBoostr.com Helps you Grow your Tumblog, Efficiently, Ethically and Easily. Its designed and developed by tumblr users for tumblr users, If you are an avid tumblr user you will love this tool, Best of all its free for personal user so why not give it a try :)
Queue Unlimited Posts
No More Posting Limits, Queue Unlimited Reblogs and Even New Posts to Your Bboostr Account without Clogging up tumblr servers More Info »
Check who Unfollowed You
With Bboostr you Can see who has unfollowed you and feel free to unfollow them if you wish so :)
Create Posts via RSS Feeds
Auto Post Content to Your Tumblr Blog via Wordpress, Twitter or Any other RSS Feeds
Multiple Ways to Follow Users
Bulk Follow Users from a List of Tumblr Blognames, Follow Users who Follow Back, Does Promos. etc...
Manage Multiple Blogs
All Your Blogs under One Single Roof, You can Connect Unlimited Blogs to Your Bboostr Account*
Lot More On the Way...
No More Posting Limits, Queue Unlimited Reblogs and Even New Posts to Your Tumboss Account without Clogging up tumblr servers