This is very welcome but long overdue: a web site that lets you opt out of receiving telephone directories. Be honest now, when was the last time you used your White Pages or Yellow Pages in print format?
The Directory Select site lets you cancel future delivery of directories to your house. It only actually implements the cancellation for a three-year period, which is annoying (but I suppose allows for you moving house and the next person wondering where their phone directories are). It also has pretty wide margins for when cancellation will take effect, so it might well be 2011 before the scourge of unwanted directories kicks in. But it's a lot better than the familiar stack of unwanted books on a one-way trip to the recycling bin.