This is something I found while I was on my LinkedIn profile. I have to say being able to actually apply for jobs through LinkedIn makes total sense; considering that it is a website for hooking up with professionals. With that being said, people should keep their options open because there is no way that I could just land a job from LinkedIn alone. It is nice to be able to connect with professionals, but I have had better luck with other sites.
These days, it is a good place to store your resume because when someone tries to find your profile in the search engines, 9 times out of 10, your Facebook profile and your LinkedIn profile is on the first page. I'm not saying that I couldn't land a job via LinkedIn: I am saying that out of all the websites out there LinkedIn has had mediocre responses in the past. For all due respect to LinkedIn, I have actually gotten two job offers, but that was while I was on contract in Korea. Here is the article of LinkedIn's announcement about their up and coming plans to make the site better.