Title is self explanatory but I'll say it again. Let's get a list of all the apps that utilze the new Bluetooth feature. Sorry if there's already a thread I looked and could not find it. Well start listing!
Seached the App store for "Bluetooth", and all I saw was a program that would let you transfer V-cards, or in other words address book entries. Given that all the 1st gen Touches don't have bluetooth, many developers are doing their best to make their apps work via WiFi.