It would also be nice to be able to write a wish-list for shopping. Like I would like to buy the Dynamite Warrior DVD but I want it for less than 10€. With this info my device could alert me if I pass a store that has the DVD for this price. Maybe it could even work so that if they see that I'm looking for it for 10€ and it's 12€ at the store, they could give me a personal discount and sell it for 10€.

The thing I worry most about content discovery is that it might become too intrusive. I fear that if I check any checkbox everyone will try to push their stuff for me. I only want to get content that I'm really interested in.