This document discusses virtual communities and how to identify influencers within them. It outlines a 3 step process: 1) Identify top influencers within relevant communities by analyzing millions of bloggers, 2) Listen to, understand, and engage with top influencers and long tail influencers to find hot topics and trends while mapping communities, 3) Measure the share of minds, voices, and conversations as a result. The goal is to help clients like Ogilvy create targeted content, conduct research, and launch products within key communities.