Facebook waged war against Foursquare when it introduced the location service Places a few months ago. Earlier this week, the social networking giant went after the likes of Groupon with the launch of Deals, a feature that lets participating vendors send promos directly to your phone (provided you've "checked-in" using Places, of course).
But the real casualty with all of these developments may be your privacy.
As Facebook encroaches beyond your life as a social butterfly and into your life as a consumer, a lot more is at stake. Personal information you inadvertently broadcast about when, how and where you spend your money is now up for grabs. While most everyone can appreciate a good discount, this shrewd feature may also result in more impulsive purchases, particularly after a breakup (which Facebook already knows about) or if you use your credit card willy-nilly.
The problem at the end of the day is that Facebook is still not secure. Whereas your bank offers secure browsing, Facebook doesn't even warn its users that there's a privacy issue in the first place...