I want to see kind of analytical tool for my karma.. and see how I am doing!
Let me explain: Can you program a tool that would draw charts of your karma history... so you can see if your karma is raising or not? And it would be great if you can let the users choose to display their karma in specific dates!
There is something more advanced also... Can you analyze the topics that user is writing about that helped him in increasing his karma? Also recommend a stories for the user to comment on... that's related to the user's interested topics based on his/her previous comments.
I think this is hard somehow... because it needs so much of analyzing, data mining... and some logical factors to work with!
What do you think? :D