I do like the folks I've met from Linkedin but am amazed at their ability to do harm to everyone including themselves.
In this latest move described yesterday by Mike Lacy at Digital Trends, you will likely end up an unkowing cheerleader for any product or service you investigate while on the site. Essentially, without asking permission, Linkedin has opted in all 100 million+ members into a new service where advertisers get the benefit of touting to your friends that you have looked into their offering.
And yes, upon hearing this piece of news, I immediately scrolled over my name (upper right) to click on 'settings' then clicked 'account' (lower left) then clicked 'manage social settings' in order to remove permission.
How does this affect recruiters? Your top candidates will be thinking about alternatives as the credibility of this once trusted site slips. Suggest leaders at Linkedin look up the term 'hubris'. It applies here.
Beginning to wonder how many more bullets they have in that gun.