Who uses phonebooks these days, anyway? I suppose many people do, but I seriously haven’t looked in one in years. It pains me when they drop six pounds of ground and reconstituted timber at my doorstep every few months. Then I read the poorly printed bag that the lastest one came in (oh yeah, timber in plastic!), and guess what, Dex will stop sending you phone books if you ask nicely (and give them all kinds of PII).
Go ahead, do it for yourself and save a tree or two a year.