Foursquare has been updated to version 1.9.55. Photos is now available. I have not noticed anything else new yet. The update went smooth and does require a reboot after install. Comments added in about a week.
What is foursquare?
Foursquare is a location-based mobile platform that makes cities easier to use and more interesting to explore. By “checking in” via a smartphone app or SMS, users share their location with friends while collecting points and virtual badges. Foursquare guides real-world experiences by allowing users to bookmark information about venues that they want to visit and surfacing relevant suggestions about nearby venues. Merchants and brands leverage the foursquare platform by utilizing a wide set of tools to obtain, engage, and retain customers and audiences.
To download Foursquare, open this link from your BlackBerry: http://foursquare.com/blackberry/beta