The app should be extremely simple as per the wireframes. It is really just two screens (potentially with very simple login/splash screen).
Users land on the first page. There they have three options:
To (a text box which they can use to enter a friends name from Facebook, an email address or Twitter handle)
For (a text box where the user can specify what they are giving/taking +1/-1 for - for example 'cooking', 'funniness' etc)
Give (+1 or -1)
Once users input their choices into the text boxes, the page should show them a very simple 'thank you popup' and then refresh to allow them to give or take points again.
There should be a profile/leaderboard button to allow users to move to the second screen.
The second screen should contain basic profile info (name, photo, quick quote etc) and should also feature a leaderboard. The leaderboard should show how many points the user has accumulated against those of their friends. A dropdown bar will allow users to see leaderboard based on different topics (cooking funniness etc)