My mockup has four different options in its homepage. (As seen to the left.)
The user has the option to check out their feed, which discloses information on past popular debates had, or the debates of people they follow. In feeds, they also have the ability to create a new debate of their choice, by filling out a request form and inviting a friend.
They also have the option to choose a prompt (as seen to the right,) and begin a new debate with a random opponent. There, they will pick their stance on the debate and only get matched with players of the opposite stance. This will continue on into a chat room, until both arguments are done. Once they are completed, the debate will be sent in for voting by other That's Debatable users. The opponents will rate each other on a 5 star scale, which will be seen on their profile.
The star system will help determine who is on the leaderboard.
After voting, a winner is determined based on who argued their point best. If the player wishes to further their debate they may return to the debate, which they will find in their chatroom.