Determine expert users not only with generic Karma for all
Using Askbot without a principal object of site but refering to a generic community we will receive a lo of questions of a lot of types related to a lot of categories and arguments. Tags specify what is the object of question and this is a good thing and karma define the reputation of user. I'd like to have a possibility to have specific users specialized in a psecific category that could be identified from tag or also between a category. So i can have a "guru" on a determinate category and other users can identify in that users the expert for that argument. There is a way to have this feature?