When did Groupon become the best thing ever?

I have had a Groupon account for a while, but there was never much that interested me on there. Lately, however, it's like Groupon started reading my mind.

Your tenant just moved out? You must need amazing deals on carpet cleaning and full house detailing available from Phoenix Groupon! How do they know?!

You are in a wedding next weekend? Well, obviously you need a really cheap professional teeth whitening kit. Why, yes I do!

Did you need motivation to start exercising? Here's an amazing deal on fitness boot camp! Yay!

Seriously! How do they know? Is Groupon stalking me?