Thanks to Friend Block I can see all of my 238 friends profile pics in one place.
Some observations (NB, I can’t count very well) I leave it to you to suggest interpretations:
8 have not provided a picture at all and so are represented by a ‘?’
3 are represented by hand-drawn caricatures of themselves and 1 has a Simpsons avatar.
There is one cartoon character (Pinky), one stuffed toy and one toy cartoon character.
There is one cat in sunglasses and one cat with the mouth of a shark. One person is a pair of Lions, possibly copulating.
4 have some other form of graphic design (I can’t think of a better description at the moment).
Four people have pictures of themselves further processed with an imaging tool.
10 people have included other people in their profile pictures mostly people with their spouses and children.
Four people have pictures of themselves as children.
One person has two heads (or perhaps two faces)
Two people have their names in the shot.
21 of those who have photographs of themselves have chosen monochrome images. Most of these are men.
Of those with simple headshots about 30 are not looking into the camera.
Around 20 have one hand up to their face in some way.
7 are wearing sunglasses.
One person has a parrot. One person has a snake.
Yes. These are my friends.
[UPDATE: Since posting, it has come to my attention that two of the monochrome folk have gone coloured *AND* both put on shades - co-incidence or conspiracy?]