I went to an info session on campus and applied online, then was contacted by a recruiter for a phone screen. The phone screen was pretty basic and short, only about twenty minutes. The recruiter was really nice and asked me about a time when I acted as a leader, if I had any experience working with a quota, and of course why I wanted to work at LinkedIn. He gave me time to ask him questions about the position, and then invited me to their Invitational in San Francisco the following week.
At the Invitational there were about seven other candidates. We got a chance to ask one of the team managers our questions about the company and about the position, and then we got a tour of the office and lunch. At lunch they brought in a bunch of other SDSs for us to talk to. They were all very nice, friendly and open to answering questions. We then went off to our four, 30-minute interviews. Again, the questions were pretty standard; be prepared to talk about why you want to work at LinkedIn, why you want to work in sales, your teamwork experience, leadership experience, and what sets you apart as a candidate. Know the product pretty well, too. I walked out feeling pretty good about it, and was contacted by my recruiter with an offer the next day.
Overall, it was a great experience! Everyone was extremely friendly, outgoing, and intelligent; they obviously loved the company and had great experiences to share. Just relax, be yourself, and ask a lot of questions. :)