By using Google Places you'll be able to help your customers to find your business and your site on Google Maps. When potential customers search on Google Maps they will be able to see:

• your business' address
• the opening hour
• photos of the entrance or of the products
• a link to your website
  
• your phone contacts information.
  

Entering your business on Google Maps is simple and free.
Start now: http://www.google.com/local/add/businessCenter
For more information see the Google Guide