While I like the idea of using LinkedIn more often the privacy implications put the brakes on that. The good old saying, don't put anything on the internet you don't want everyone to know still holds true. I know my employer is actively using it to recruit talent, I even get requests from colleagues to "link", but you don't know how that other person uses your information once you share it with them.

Honestly, using LinkedIn is like using the office fax to send out resumes. Except for recruiters and jobseekers I get no benefit from putting my career on the line.