alt Hacker NewsOne of those myths too many programmers believe: All street addresses can accept US mail. Not necessarily the issue in this comment, but when somebody gives you both a shipping address and a mailing address and you send mail to the shipping address, the fault is yours if it doesn't arrive.
Another: A particular street address only maps to one person, entity, or family. Counterexample: Giant skyscraper with a zillion tenants, each in a different suite. Or a giant apartment building. Etc.
Still another: One particular suite address only maps to one person, entity, or family. Counterexample: Any of thousands of commercial mailbox-rental / package-shipping stores in US strip malls, which tend to have suite numbers (within the mall) and possibly hundreds of tenants, all at one suite.