You didn't explain how they knew about the PH/BP, which makes people assume it was due to location data (like your first example).
However, as for comment #1, Google doesn't use the SSIDs to determine locations on mobile, they use the [MAC Addresses](http://static.googleusercontent.com/media/www.google.com/en/...). They do have a database that also includes SSIDs for these MAC addresses, but there could be a dozen SSIDs around you at any given time, and you could be at any one of those businesses. I have already explained that Google uses coarse location to determine your location, not fine because of battery issues (and you can check this in Android, it's listed under the lower-power location use). Coarse doesn't use GPS, and its accuracy is generally 100+ meters because of this. It will know the general area you were at (and, no, it won't know you were there for 10 minutes, as it only picks up your location at fixed intervals which IIRC is above 10 minutes), but it won't know, specifically, where you were in that area.
I will concede on the Pizza Hut location, but it would have only known you were there because of the review, not because of the location (for the same reason as above).