Crispin Butteriss is the Chief Practice Officer at Bang the Table and gave a presentation on building successful online business communities. He discussed seven preconditions for success, including having a niche topic, strong purpose, interested members, and ongoing promotion strategy. Butteriss also outlined seven strategies for nurturing communities, such as engaging members and thanking new members. He warned of seven common mistakes like being self-serving, unrealistic expectations, and isolating members. Butteriss recommended modeling thriving communities like those on LitReactor and Good and encouraged attendees to connect with him on LinkedIn.