> Were the ads from an app from the store that you had installed?

This is my main concern over installing apps in general but specifically store apps. I've noticed that grocery stores are moving past existing loyalty cards and want you to use their apps for exclusively available digital coupons. The prices I'm seeing are very compelling and are on top of existing loyalty card discounts, and I could see lots of people using the app because of it. The assumed amount of abuse keeps me from lemminging my way through the store.

Neither. They used to discover your device and then send a Bluetooth push. "Would you like to receive a file from …"

It was usually an image, movie, or audio file.