title: PHP / Google Maps API - Easiest method to verify a street address and standardize / prevent duplicates?
body: <p>What is the easiest way to do this? I've read Google Map API can't legally be used as an address verification service. What are some practical alternatives and/or respected premium/pay-per-request services?</p>
  
  <p>Address Validation API from '09 - <a href="https://stackoverflow.com/questions/682093/address-validation-api">Address validation using Google Maps API</a></p>