Kevin Rose, founder of Digg.com, has a new project. WeFollow is a directory of Twitter users separated by category and influence within that category. So if you're looking for some influencers you would like to follow (thus increasing the chances of your overall visibility within a category), head to WeFollow and start searching.
You will find some serious players. Unfortunately, because of how it's sorted, you won't find the little guys (without clicking through page after page of results), who can often have a great influence on your number of followers. It's similar to gaining influence with Digg - unless you know people, you can forget about any serious benefits. However, Twitter is still early enough in its progression that popular users are still inclined to follow you, no matter who you are. And because it's from Kevin Rose, expect WeFollow to get plenty of attention, meaning that you should get listed there as soon as possible.
To do that, just tweet @wefollow with up to three tags you want to associate with your account. For example, @wefollow #technology #marketing #SEO. Or, click the button on the top right of the website and WeFollow will get you started.