mailbox

Every winter you see mailboxes that are either holding on for dear life or covered in duct tape after being slammed by snow from a plow. Who replaces those?

It seems like something that should be pretty cut and dry, until you start to do it. Are there special rules when installing your mailbox?

When mailboxes get smashed by a snow plow, who is responsible? What are the next steps after you've picked up all the pieces?