LinkedIn is the professional resumé of social networks. It mixes the ability to keep an updated resume of where you work and what your accomplishments are with a social aspect of having people recommend you and comment on your work. Most users find LinkedIn helpful not as a day-to-day network they use, but rather when they’re searching for a new job and want to find people they know that might have connections. The old saying “It’s who you know” when finding a job or making a connection is particularly relevant here where those connections can be exposed to you (You know this person who works for the company of one of Bill Gate’s sons, and the VP went to high school with you).