Scary as pictures of ourselves can be (), having a real picture of yourself either as your avatar or within your profile can be handy in ways you never imagined.
At a recent Christmas Party a guy came up to me and said "...are you Steve - FDDJ?"
Turned out he was a fellow MDD user and recognised me because of my avatar.
So don't be shy, add a picture somewhere, you never know who you will bump into!