I saw this question on Twitter one week ago, and it intrigued me, so here it is. This goes to the very heart of who you are as a person, and who we are as a society.
Here it is:
When you're in line at the grocery store, do you put the plastic separator on the belt after your last item? Or do you leave it for the next person in line to do it themselves?
RANTY UPDATE: Damn it, Google, would you PLEASE, for the LOVE of GOD, change the way Blogger's comments moderation works so that if I accidentally click "Delete" instead of "Publish" -- especially if I've selected multiple comments -- I get asked a simple "Are you sure?" I swear, the Blogger "Delete Comment" button is the ONLY time, anywhere in the entire wonderful world of computers, that I know of where if you click "Delete" you aren't prompted with a "Are you sure?" dialog so that if you DID click the wrong frakking button, you're not completely screwed.
For those of you who commented earlier: Ayup, that means I accidentally deleted them all. My fault, but Blogger/Google could very easily implement a safety feature on this. Sorry, folks. Go ahead and resubmit if you see this.