I've also read theories that Harry was swapped out at some point with the son of some other rich, high-ranking person. I don't know about this one, but it's intriguing.

I think a lot of the evidence points to Diana being alive, as her story isn't unique. I think a lot of famous people have faked their deaths in order to escape the system. Take Joan Rivers, for example. She "checked out" right after making the statement that Michelle Obama was a "tranny." There's a video floating around that was purportedly taken months after Rivers's "death" that shows her coming out of a restaurant with a group of people that were her friends. She's not wearing any makeup, but you can still tell it is her. She goes to great lengths to stay away from the reporters' cameras and is obviously ill-at-ease and afraid of being outed.