Has anyone else noticed the signatures on other boards?

I frequent the psychotherapy board, and the only signatures I see are an occasional quote and then mostly NO signatures! It's so different from our board that I feel self-conscious about my own. But everyone here on the bipolar board has a signature with at least diagnosis and meds.

Have you noticed on other boards here on PsychCentral, do they have signatures? Is it just the psychotherapy one that doesn't because it's not diagnosis specific?