Tweefind lets you search Twitter and displays results ordered according to a rank assigned to users.
This rank (Tweerank) depends on how popular/relevant/active those users are on Twitter. The higher this rank is, the more authority a user has.
The Tweerank is assigned by an algorithm / spider working 24/7 and changes dinamically depending on how a user uses Twitter.
Clipping is a handy way to collect important slides you want to go back to later.