I applied through a recruiter. The process took 2 months. I interviewed at LinkedIn (Mountain View, CA) in Mar 2013
Interview
A phone screen with a recruiter, 2 phone screens with web devs (a questions-based interview, and a coding-based conference) and 4 on-campus interviews (3 technical, one with a manager). The process was very rigorous, however, I felt like the interviewers where working with you to determine what you do know, rather than trying to trip you up.
Interview questions [3]
Question 1
Build an HTML & CSS only image gallery with thumbnails that make the main gallery image update on hover.
Phone interview: create a recursive function that calculates the fibonacci sequence (phone interview admitted that he just threw this in because we'd finished other questions earlier).