
Facebook's worst-kept secret,
Facebook Places, was unveiled late yesterday and it has the internet buzzing already. The geo-location feature lets Facebook users to check-in (
sound familiar?) in uh, places, like movie theaters, restaurants, etc. and share their location with friends.

But before we answer the $64,000 question, let's clear-up on how it actually works. (By no means is this an in-depth Q&A/analysis of Places in general, so
take a look at Mashable's guide if you want more.)
How does it work?
It's pretty simple, but you do need the latest version of Facebook's application. (It only works on iPhone on for now, but Andoid, Blackberry users can use it at touch.facebook.com
until Facebook includes support). Once at a place, open up the Facebook mobile application, check-in at the place, tag your buddies that are with you, and your check-in will show up in the news feed.
How is it different from Foursquare, Gowalla, and other geo-location apps?
Well, for starters, it's Facebook, which means geo-location apps are no longer niche. According to Facebook, around
150 million users access Facebook Mobile which dwarfs the
number of Foursquare and Gowalla users. Now even the most casual mobile user can use it, a departure from the more tech-savvy audience for services like Foursquare.
Additionally, Facebook Places
doesn't have rewards or badges, perhaps as a mea culpa to Foursquare and Gowalla. As Facebook continues to grow, perhaps it doesn't want to be seen as a big bully—unlike Google, who's public image has taken a beaten recently—and is actually working with these services to integrate into Places.
So, how will it change the travel industry?
Traveling is about exploring new places, meeting new friends, and getting social so "adding location check-in seems pretty much the most natural thing the social network could do," industry-watching website
Tnooz reports. However, it only works in the US for now with plans for other countries coming soon.
Facebook Places will let you share your vacation in real-time (for better or for worse) while continuing the conversation with your friends. Maybe if you check-in to a restaurant, a friend can warn you to skip the veal and try the pasta instead? Or maybe it'll make the dreaded airport pick-up a bit easier?
For travel companies,
Tnooz continues, adapting to a Places world will be a bit more challenging. Hotels and tourist attractions will no doubt encourage users to check-in (hello, free PR!) but negative comments and reviews could hurt them. Hotels and attractions could even create customer loyalty, like Foursquare has, and offer discounts or VIP treatment.
What do you think? Will Facebook Places change the way we travel?