ReadWriteWeb

If there's a hard-to-reach person you want to meet, one of the best ways to do so is through their friends. That's true in the offline world and the increasingly social nature of the internet may make discovery of the social circles of key influencers a powerful business practice online.

A new class of tools intended to surface influencers and the people they are influenced by are focusing on a hub of rapid, connected conversation that's wide open for analysis - Twitter. Could analysis of individual behavior on Twitter become a valuable tool for business development and marketing? A growing number of startup companies are making a case that it could.