It has been a touchy topic these days. As gamification goes advanced, a lot of data is collected based on user actions. Trophies like Anniversary, First Like, First Quote etc are in fact adding to the info collected per user. God knows what else are collected when those trophies and badges are awarded.
In some cases, these gamification plugins are 3 rd party. So neither the software nor the user is storing the data and is going to some distant server out of the reach where the rules of the land works.
How do you see this kind of data mining ?