How Facebook is using your check in data

Facebook is known for using user data in ways that can raise privacy concerns.  See Facebook's recent study.

All the statuses and posts under the Facebook feature "Check in" is public by default. So every time you do a check-in in Facebook it is visible to prying eyes.


Proof : Facebook Places directory

Facebook has neatly arranged all your data in an easily retrieval way.

 If many users like a particular restaurant in Thailand, that restaurant is highlighted in Places along with all user data as seen below. So it is part of Things to do in Bangkok according to Facebook as seen below

All the data is freely available and you actually don't need to log in to use this feature.
So if you are on a vacation and decide to check in to a place with your photos, you are aware where they end up.