In case you are not familiar with it, LinkedIn is like a Facebook for business, a networking site that connects millions of professionals and companies. It is a great resource for looking up both companies and individuals as it provides very robust search options that let you narrow down by location, industry and other criteria. A great feature of LinkedIn that I like is that it shows you related companies and contacts to help you find other people working in a specific company or similar people or companies.
BoomTown is missing a lower-cost option for smaller agencies and individual agents. Even though their lead generation marketing efforts and CRM combine the best use of communication and technology to produce a great product that stands out among real estate lead generation companies, BoldLeads or Real Geeks might be a better choice if budget is an issue.