I can play ANY position, I always believe that being able to play any position is important to be able to play AGAINST those positions as well as to know the game. I play a decent amount and my strongest Champs for each lane are as follows:
Jungle: Lee Sin (except he is currently bugged) Darius, Nocturne
Mid: Orianna (best), Kennen
Ad carry: I can play any AD carry, I own: Graves, ashe, vayne, varus, tristana, ezreal, Yi
Support: Blitzcrank, Soraka, Teemo, Nidalee
Tank: Leona, Shen
Solo top bruiser: Riven, Renekton, Wukong
I am very flexible when it comes to playing different roles. However going into ranked queue (as i learned the hard way) doesn't yield good team comp. This is very important to me and thus am looking for a team of 4 to pick me up. I also use skype.