I was recruited by someone through LinkedIn. I went along with it and was interviewed over the phone by a manager. That process was smooth enough, and I was passed along for another phone interview within 2 weeks. The second phone interview was pretty basic with standard interview questions, such as "describe blah blah experience on your resume." I was promoted to the final phone interview. Yes, I had 3 phone interviews. The final phone interview consisted of 2 case questions, which threw me off because they were so unusual. The man asked me "How many golf balls can you fit into a plane?" and "How many times do you run a horse around a track in the most efficient manner?". Three phone interviews is a bit much, so I wasn't upset that I didn't receive an offer.