I subscribe to Aviation Interviews but don't have the deluxe subscription so I only get limited info. This is a snippet they sent me from a recent JetBlue interview experience. Hope it's helpful to someone & apologize if it's been posted already.
"All other gouges are spot on, they really don't pull any tricks. In the last window (Summer 2014), jetBlue had 3,800 applications. They interviewed 287 and of those, 222 advanced into phase 2. It seems the difficult part is getting to the interview. It's my opinion that Internal recommendations carry a lot of weight at jetBlue. Always network, and for the frustrated 7+ year regional FOs like myself, focus on the things that you CAN cont..."