Wow, I must really have squandered my college degree because that map made no sense to me at all, lol. I tried to enter San Jose, CA and it said it never heard of it...argh. And San Francisco wasn't even on the big map. I ended up clicking somewhere in the vicinity, but I don't think it's very accurate.
And who the heck knows their longitude and latitude? ;-) Not me, that's for sure!