There is already a system in place for this - it's called the United States Postal Service. When you fill out a change of address card, it goes into the Nation

There is already a system in place for this - it's called the United States Postal Service. When you fill out a change of address card, it goes into the National Change of Address (NCOA) database. Many companies, from "junk mail" all the way up to your mortgage company, subscribe to services that routinely update their databases with NCOA data. It can take two to six months for the NCOA stuff to filter all the way through the system, though, so even if you do fill out a change of address card, be sure to contact any company or organization whose correspondence you must get in a timely manner (e.g. mortgage, rent, bills, etc). Still, for the truly lazy who don't mind a late fee or two, they will find you (for the most part). http://en.wikipedia.org/wiki/National_Change_Of_Address http://en.wikipedia.org/wiki/National_Change_Of_Address