![A Closer Look at the Privacy Features of Facebook Places [PICS]](https://helios-i.mashable.com/imagery/archives/07moOsNxsQLupBAO4PWT7T1/hero-image.fill.size_1248x702.v1647018925.jpg)
In addition to talk of what the arrival of Facebook Places means for startups like Foursquare, the aftermath of last night's launch has given rise to a number of questions about privacy.
Notably, the ACLU published a list of grievances almost immediately after Facebook's announcement, many of them to do with the feature's option to automatically check friends into locations.
Some of the other concerns raised aren't necessarily new to realm of location apps, but are amplified by general concerns about such services, the enormous size of the social network's userbase and the company's history of privacy-related issues.
Since Places still isn't enabled for many people (Facebook is working on it), including those outside of the U.S., Mashable reporter Christina Warren and I decided to test out the features -- especially the controversial tagging option -- on the web and on our mobile devices this morning. The results are illustrated in the gallery below: