I just downloaded the newest version of this module which was released today & it's still not displaying thumbs for all sites. Try sharing the following links: http://www.tumblr.com , http://www.google.com , http://wordpress.com , http://www.twitter.com - If you click on the next or previous link it either takes you to the previous page or doesn't do anything at all. Thanks.
Just downloaded and installed. This is what I have been looking for. It still seems a bit buggy though. It will show the thumbnails for some sites, but not all. Not sure why it is selective like that sometimes. Overall, I am pleased, but wish it would do the thumbnails on all sites. Maybe it is because I am using v7.0.9, not sure.