This document summarizes research analyzing the topics and importance of services on the Tor network. It collected data on over 1 million pages from 3,347 Tor domains. Topic modeling found the most common topics were drugs, marketplaces, and gambling. Betweenness centrality identified directory domains as influential hubs. Eigenvector centrality established the Dream marketplace as the most structurally important "core" Tor service. The research concludes Tor is used for illicit marketplace activity more than open information discovery, and directories are critical for connecting domains.