On installation, the user has to go through a set-up process. It asks for your email. I have a throw-away email address, no problem. Then it requires setting a password. For a browser add-on? Ok, entered. Then my zip code. It says it needs that to calculate shipping. Ok, but you're starting to make me nervous. Then, it asks for your phone number. Says it won't work without it. Uh, no thanks Capital One Shopping add-on, I think I'll decline. This is one of the most privacy-violating add-ons or apps I've seen in a long, long time. Mostly all developers have realized folks just don't go for that anymore so they quit asking. Not this add-on, they want everything you're willing to give them.