Here are some of the answers provided by people in the social software tribe:

A: Why exactly would they want to change the lightbulb? Is it creating a disturbance? Is there a proximity issue? Who's been talking about it? What's its URL?

A: Two to six, depending on how far away it is.

A: It's a feature not a bug. Why would you need to change the lightbulb?

A: Just one to ask, "Are you sure its out? Try turning it off and back on again."