This document discusses various metrics for measuring performance on Twitter. It examines metrics for overall Twitter performance like followers, frequency of tweets, and @replies. It also discusses measuring tweets through clickthroughs and responses, both direct and indirect. Additionally, it explores measuring "Tweeple" or Twitter users, including brand advocates, naysayers, growth in followers and connections beyond Twitter. The document recommends building a knowledge base of Twitter data, going beyond just increases in followers and tweets, and measuring active conversation, contributions to the community, and success through relationships.