I think that just mentioning ones talents in your bio or in the app in general is enough. I would thinking lockpicking would go without saying for a thief type character and such.

A section for skills in the sense of "I have good hearing and am good at sneaking around" rather than the actual game skills may make more sense in my opinion. At the same time, adding that into the application means a lot of people will have to edit, and I have a fairly good feeling that everyone put in all their skills and abilities in their bio or personality already, so it may be redundant.(Or its just logical for them to have to be good at bargaining if you're playing a merchant character)