Facebook link thumbnail

Question

When posting a link to a website in Facebook (Google+ and the rest count too) you\'re given a thumbnail, or selection of thumbnails to choose from. These are tags from the

Answer 1

As already said: Best would be to use the metatag with the og:image opengraph property.

In addition to that: Facebook is not the only platform using the opengraph metatags. Also Google+, or Xing are preferring it. Not sure about others...