I like how sites like Amazon and Netflix use recommendation algorithms to figure out what kinds of other products I might be interested in. Does Groupon need to be trained to know what I like, or does everyone just see the same deal each day?
You can get personalised deals along with the city-wide "spotlight" deal (providing it is a different deal). You need to ensure that you have completed your personalisation information.
What do I see if Groupon doesn’t have any personalization information about me?
There will continue to be a city-wide “spotlight” deal for when we know nothing about a subscriber. If we know a little personalization information, subscribers will see their personalized deal instead (we’ll also show them the city-wide spotlight deal if it’s different).
I don't think their "personalised deals" are as sophisticated as Amazons recommendations etc but it's a start.