Ranking - Social Networking (iPhone)
Ranking - Social Networking (iPad)
RoomTalk + by LuCam Apps
Some of the categories include, but are not limited to:
Food & Drink,
Each of the categories contain multiple chatrooms, the topic relating to the category it's found in. For example, in the Sports category, there are chatrooms like Badminton, BMX, Hockey, American Football, etc.
RoomTalk, online conversations and user advice.