Digg founder Kevin Rose has just launched his latest start-up, We Follow. We Follow is simply a Twitter directory that will help people find others niche Tweeters.

To be included in the directory, you simply tweet “@wefollow #tag1 #tag2 #tag3″, replacing the tags with the category where you want to be included. Some key categories include news, blogger, tech, marketing, blogs, among other categories.

Various key accounts have already been included, including Shaq, Google, CNN, Coldplay, among others. The accounts with more followers appear higher up in the directory, so it could become very difficult to get noticed if you don’t have many followers, and even more so as the directory builds.

We Follow does not differentiate against existing Twitter directories such as Twellow and Just Tweet It, but is already picking up with Kevin Rose as its backer. However, I will say I like the fact that We Follow seems very simple compared to the other Twitter directories, but what We Follow also needs is a way for people to manually search for people and tweets. We Follow has had more than 3,000 followers added in about 24 hours since its launch and announcement via Digg.

We Follow also has a list of the Top 10 Tweeters ranked by number followers with the 10th Tweeter being Lance Armstrong with 302,000+ followers - good luck getting on that list.