I actually went to a NYLF (technology) "camp." It was interesting and useful, but I don't think it was worth the $1,300. The only notable speaker there was the creator of the Napster (Sean Fanning, I think).
I met some pretty interesting people and it was decently set up. There were a lot of events and I enjoyed seeing different parts of California (my favorite part was probably the visit to the Stanford campus).