Facebook is change again, so be ready. These aren't big changes, but changes that Facebook thinks will help with your Facebook experience.
Some will say many of the Facebook changes are in retaliation to the popularity of Google+ over the last couple weeks. This may be true, but Facebook does have the users and from what I can tell these are positive additions to the site.
Back in September Facebook launched Places, a built in feature that allows you to check-in to places you visit. The feature is much like Foursquare, the stand along social network based on checking-in to venues.
What Foursquare did to entice people to check-in was to reward the most frequent visiter by making a deal with that venue. It other words, you check-in the most (become mayor) you get a discount of some sort.