Grader on Twitter

Grader is on Twitter as @grader, but also online at http://twitter.grader.com/ and is a site of some interest. As you get going on Twitter, you can get “ranked” by Grader on a score out of 100. It is based on some secret algorithm apparently so people can't game the system.
Apart from that aspect of Grader, you can have a look at who the top Tweeple are in a particular area or even by topic using the search function.
When you use the search function, it will list the Tweeple by their score in descending order. For example, if you search for “gardening” on Grader, you will get a list of all the top 100 people interested in gardening on Twitter. You can see their “bio” from their Twitter account and if you click on their Grader score, it will take you to their Twitter account from where you can follow them. Naturally, you must already be logged in to Twitter yourself to follow anyone.