Summarize the following:
If you live in a larger city, you may get phone books from multiple carriers during a single year. To stop them, or to receive only the one book you prefer to use, follow them to their source. Many have opt-out pages online now. Most yellow pages phone numbers are available online, so the best option for you might be opting out entirely. To opt out of a variety of phone books at once, go to Yellow Pages Opt Out at http://yellowpagesoptout.org/. Once you create an account, you should see a selection of phone books for your area. You can choose which ones you wish not to receive. Verizon/Superpages and Dex both use Yellow Pages Opt Out as their opting out service. Most printed phone directories may be recycled with your regular paper recycling. They're also good for starting campfires or charcoal grills.

Summary:
Pick one. Pick none. Recycle them.