By now everyone in the executive search
marketplace, whether search firm or candidate, is aware of LinkedIn. With 238 million names it is almost a foregone conclusion that many or most candidates on a short list will have a LinkedIn profile.
Most of Association of Executive Search Consultants (AESC) members when commenting on LinkedIn acknowledge that it is a very useful name generation tool. Some of the AESC's largest members even have significant contracts with LinkedIn to provide multi-license facilities to their research staff.