Add to any Zencart eshop the Facebook opengraph tags

Do a small check to your site. Go to the official page Facebook gives you to check your site:
http://developers.facebook.com/tools/debug

Do you see any warnings? If yes then you need these warnings to be fixed. This will help you when pasting links from your site to Facebook. When I have completed my work, Facebook will read the right information from your site and display links with meaningful content and images.

And a bonus! A more thorough analysis of your Facebook features with suggestions for additions to help you become viral ;-)