Touche.
I can never forget a face, but that does not help with references much. If I saw someone once over a year ago, with a very common name and a handle with no history, it can become difficult. Especially when dealing with fake names/real names, handles etc. I also do not keep notes or save #'s, unless I know for certain, it is okay.
Can't tell anyone what ya don't know. That can be a good thing.