I'm a recruiter, but I hate LinkedIn. In some ways, that's a gross exaggeration because LinkedIn does one thing very, very well: it standardizes people's work experience and puts it all in one place. Once you get used to reading LinkedIn profiles you can get the context you need about a person very, very quickly. This is great.
The rest of it sucks. In particular, LinkedIn Recruiter (the module that lets you see pretty much anyone, no matter how many degrees of separation exist between you and them and lets you send some number of InMails per month) is a giant spam factory. Its design encourages impersonal spams by making it super easy to send exactly the same InMail to large volumes of people. If I'm a recruiter, I can search for everyone who attended MIT and now works at, say, Oracle very easily, and then do the moral equivalent of throwing a bunch of spaghetti at the wall to see what sticks. Ugh.
The rest of it sucks. In particular, LinkedIn Recruiter (the module that lets you see pretty much anyone, no matter how many degrees of separation exist between you and them and lets you send some number of InMails per month) is a giant spam factory. Its design encourages impersonal spams by making it super easy to send exactly the same InMail to large volumes of people. If I'm a recruiter, I can search for everyone who attended MIT and now works at, say, Oracle very easily, and then do the moral equivalent of throwing a bunch of spaghetti at the wall to see what sticks. Ugh.