Something I noticed several times in London this weekend is coffee shops and hotels offering customer wifi through a Facebook authentication layer: the idea is that you can free wifi if you login to Facebook and “check in” to the place. Facebook markets this as a way for businesses to “reach more people”:
When customers check in to use your Wi-Fi, their friends can discover your business by seeing the story in their News Feed
After checking in, people will be asked if they also want to like your Page so you can continue to connect with them on Facebook
What’s easy to miss is that you can bypass the Facebook login and check in process simply be clicking on “Skip Check-in” link and you’ll be connected. You don’t need a Facebook account to do this, and even if you have one you don’t need to login.