One of the cool features of Foursquare is Explore, a way to find really great things to see and do nearby to where you are, but until now, most of its features were only available on the web. That's all changed with Foursquare 4.2 for iPhone -- you can now set your location and filter your recommendations by type, or even specific foods like "ham sandwich". Your search result just got a lot more personalized!
One of the improvements with the new version of Foursquare is that your recommendations are also now dependent on time of day, where your friends have been, and places on the lists you follow. That means many more data points are factored in to the process. You are also no longer restricted to only searching for recommendations in your current location. If you're on your way downtown and want to search for places to go before you get there, you can move the map to the area you wish to search, or specifically search a specific neighborhood, city, or address.
Oh, and Foursquare also snuck in menu and pricing information in the update. Pretty sweet!