Valid W3C websites with Facebook Open Graphs or Like Buttons

last update : December 23, 2011
A developer who added Facebook Open Graph metatags or Like Buttons to his webpage finds a lot of error messages (invalid HTML/XHTML) in the W3C Validator. This means it won’t work on a lot of browsers.

Several fixes exist to make the webpages W3C compliant. A few useful links will be given below: