Twitter rolls out a simple yet powerful feature "Suggestions for You" to help users find the right account to follow. The algorithms suggest people you don't currently follow but you may find interesting — suggestions are based on people you follow and the people they follow. "When logged in, a mini-version of "Suggestions for You" shows in upper right of Twitter home page. Clicking "view all" link leads to a new tab/page in Find People area. If you like a suggestion, click "follow"; if you don't, click "hide," and we'll try not to suggest that user again," explains Twitter.
You'll also see recommendations for similar users when you view another account's profile. If you're interested in a particular user, you might be interested in these other accounts as well.
All these features will be available for developers, and Twitter will launch an API so 3rd parties can provide suggestion features in desktop, mobile, and web apps.