Cool. Can't sell it, can't leverage it against users (e.g. use it to select which products to try to sell them). If you're doing that on any significant scale it's gonna leave a hell of a trail and enough people will be involved that it'll be found out.

"waaaah but we need to share it with 'partners'" hahaha OK whatever, but bet you don't though. Illegal. Figure it out. Bet you can.