People that have watched me in the Mumm area, will typically find my default pics change frequently. There is a simple explanation. I change them according to my mood. It may go through several changes, on any given day. Or, not change for several days. It all depends. Here are just some of the moods and pics I use:
Don Rickles - When I'm feeling sarcastic or irritated
Chief Dan George or a Native American - When I'm feelin' my heritage.
Gomez or myself - When I'm feeling upbeat.
Of course, the pics are subject to change. Just thought I'd explain this a bit, in case some of you were wondering.