I'm fairly certain the Google intern demo is more geographically/culturally diverse.
Really glad this guy had a phenomenal time at Mozilla. All of the top internship programs in the bay area are equally good and I hope he gets a chance to try some others :)
I was thinking about that and I think you're right as far as the overall numbers go, but the intern group is really small (it was <20 when I was there), so the entropy in the distribution would be higher than Google/Facebook/Microsoft/Amazon.
And yeah I agree, as much as you like your first internship, switching it up for the second is usually a good idea because that mobility is harder when working full-time.
Really glad this guy had a phenomenal time at Mozilla. All of the top internship programs in the bay area are equally good and I hope he gets a chance to try some others :)