There isn't really a website, it's more of a script, so it's all in your dashboard.
Install Grease Monkey for mozilla firefox and then install FollowChecker. You'll then see a ρ next to followers and when you click it you'll see everyone that hasn't followed you back and that you haven't followed back.
Tumblr
Go to your dashboard. (Tumblr.com/dashboard)On the right, it will say "Following __ blogs." Click that.It will bring you to who you're following. Your Tumblr crushes should be on the right top of that screen :)
you just look on the tumblr website in the theme section. if you dont find anything you like, you can google 'tumblr themes' and search for what your looking for and just get the code. Then you just have to paste it into the custion HTML section.
To find your friends on Tumblr you need to visit the Find Your Friends page. Log in to your account and click on the mail link to give Tumblr permission to use your contacts email addresses to find them on Tumblr.
Almost all Tumblr posts list their sources. If you find a duvet you like, look for the original source and trace it back to the retailer.
One can find cheap skiing holidays at a website called EasyJet. Another website that one can look at is SlideShare. You can also find blogs on Tumblr about cheap skiing holidays.
One can find more information relating to Malene Espensen from Twitter, LinkedIn. One can also find this person from tumblr website, or imdb website.
Someone can find pictures of petite girls on a petite girls modeling website. It isn't hard to find. One can also check a social networking website like Tumblr.
Google "perry the platypus tumblr theme".
You can find funny drawings for online viewing at the Funny Drawings website. You can find other funny drawings from the Funny Drawings sub-section of Tumblr.
You can use the find blogs option.