The process took 3 weeks. I interviewed at LinkedIn (Mountain View, CA) in Sep 2011
Interview
Overall it is a positive experience because Linkedin is one of my favorite companies. The two phone interviews went well because the questions about relatively easy. In the onsite interview they asked me a bout regular algorithm questions, DP questions, distributed system questions, a game design question and most-interesting project. The questions are not as hard as Google/Facebook and sit in the same level as Amazon/Microsoft. The people are generally nice except two interviewers looking and laughing at funny pictures during interview. I am confident with my performance on all the other rounds except the one with two unprofessional interviewers, they interrupt me multiple times and always persuade me to adopt their "best" solution. Finally I was rejected after 1 week.
I applied through an employee referral. The process took 2 weeks. I interviewed at LinkedIn (San Jose, CA) in Jul 2011
Interview
Phone Interviews - 2
One on one interview - 6
Each interview was an hour long. It was not a progressive interview (increasing in difficulty). All the interview rounds were the same. It consisted of an algorithm question that was asked to solve
The process took 1 day. I interviewed at LinkedIn (Mountain View, CA) in Jul 2011
Interview
My worst interview ever. They terminated it at the second interviewer and I was lead out of the company. I can only comfort myself by saying that at least I saved my time.