urban psychology part deux - best things come in threes

I have written about social attraction and leaders forming paths for others to follow in a previous blog. I have been on the look out for another example and came across this (you can see another shot here) tonight in the pouring rain. For me these are the fascinating parts of society and how we interact with our environment. It leads me to thinking about the concept of bins again (a recent obsession), and what in some peoples eyes what bins represent. Is it that by using bins it is a sense of being conformist and so people rebel? or is it just plan being lazy?

NOTE TO SELF: I must do something with this.