heavy stuff. companies don't need you to want a relationship to have one...
Most companies approach the problem of finding customers on social sites through the slow, arduous and expensive process of participating themselves. On Facebook, for example, businesses can gain access to the profiles of anyone who clicks the “Like” button on the company’s business site (depending on each customer’s privacy settings). With the right pitch, offer or game, companies can gradually gain an enhanced understanding of a subset of their social customer base.
With new matching technology that’s now available, the process is faster and more comprehensive. For example, matching technology uses artificial intelligence to figure out whether a given “John Smith” in a company’s customer database is the same individual as a particular John Smith on Facebook. The algorithms that accomplish this are extremely sophisticated, and they work. In fact, matching technology has been successfully used by law enforcement agencies to locate criminals.
If a company has one or two key pieces of information about its customers — e-mail address is often the most important — that company can accurately identify them on a social site and extract a substantial amount of data, including both profile data and transactional data that can reveal relationships important for marketing purposes. (Again, the amount of data available for any given customer depends on that customer’s personal privacy settings.)