I added a steam icon to use with your profile field for steam. It shows up in your posts. If you fill in your steam username under your profile it will take someone to your steam profile page when they click on it.
I added tunngle a few days ago.
If there are any other fields that need to be added, let me know before I forget how to do it :)
Good job Led, that one's being bothering me for yonks.
How about a Xbox Gamer Tag and PSN Account