Because everybody's doing it, I wonder if you will do me a little favour and comment on my Johari window. See, there's a test on personality traits and you can tell me (anonymously or not) how you view me...
From Wikipedia

The test consists of a list of terms, each of which is an adjective relating to a personality trait. (For example, the list might begin with "accepting", "adaptable", "bold", "brave", "calm", "cheerful", and "complex".) A subject will select a few of these terms which he feels describes himself best. Each of his peers will then select a few terms which that person feels describes the subject best.

The terms are then plotted in a square grid divided along two axes into four quadrants. One axis represents "known (or not known) to self", and the other represents "known (or not known) to others.