Facebook Places

Facebook have launched a new version of their iPhone app, version 3.2. This add's Place's to their service in the US. The service is similar to Foursquare but (and Facebook stresses) the Facebook service is limited to your Facebook friends. In fact you have strict control over which friends or lists can see your location. Despite Facebook's tight privacy controls privacy groups are concerned that geotagging your location onto the internet is a step too far.

Version 3.2 also brings Twitter for iPhone (formerly Tweetie 2) style "Pull Down to Update", which is a neat improvement.

For more information about Places check out this article from Mashable.

EDIT: Facebook for iPhone is now version 3.2.1 following bug fixes.