Well, Facebook has decided that page administrators are big boys and girls and could handle the idea of uploading their own thumbnails to better express their point of view on a link posted to their page. It looks like this
While this seems minor it is actually a pretty big deal and a nice feature. There are times where the auto-generated thumbnails have almost nothing to do with a link. The trouble is that removing the thumbnail takes away a critical visual element that draws attention to the post. Having the ability to control that image should allow Facebook users to be more creative and give a better indication of their point of view regarding a linked story or item rather than the force fed images of the past.
This feature should be available to all. Are you seeing it?