Second NDA: If it's not published on a Google domain, you have to make as abstract as it gets
- http://www.goldsborough.me/google/internship/2016/11/18/01-5... - has some interesting tidbits; for example, I would not mind a visit to the Google Store :)
- https://www.reddit.com/r/Amd/comments/5x4hxu/we_are_amd_crea... - The last paragraph in this recent AMD AMA was a real "OH I get it now" eyeopener for me about NDAs and not announcing stuff AOT; tangentially related
Indexes, and yes, in a few ways. Some even have nice frontends. You actually have access to one of those.
I know I've wondered a lot about this subject for a few years, but I can't remember anything at this exact moment (just got home from being out). If you feel like poking me (contact info in profile) from some sort of anonymous email, that would be awesome, I could get back to you.
I have no idea what Google employees have access to. I've always wondered whether they can hand-code their own MapReduce syntax over Google's actual Web index (I could find SO MANY THINGS if that were possible!). I wouldn't be surprised if the cache data <-> index were accessible to everyone who's been around for >6 months, so they can tinker with it.
But I guess the only reason I'm able to type this is that I haven't signed The Large Book Of NDAs (I presume it's large).