The document analyzes pharmaceutical company presence and conversations on Twitter. It finds that Novartis has many disconnected mentions that do not link to or follow the company, representing a fragmented brand cluster. In contrast, Boehringer is part of a highly interconnected community around healthcare topics, with 73% of participants following the company - a community cluster that amplifies Boehringer's messages. The community helps Boehringer achieve a greater reach on Twitter than its follower count alone would suggest.