Harry.Patsis extensions
LinkPreview
For Firefox 0.9 & 1.0.
When mouse pointer is over a link (for over a second), a hint popsup
showing a thumbnail of the target url.
Currently, LinkPreview is using by default Alexa's large thumbnails,
and supports Alexa's small and Open Thumbshots.
Settings dialog allows you to select or add a new thumbnail server,
so if you happen to know any other service, please email it to me
in order to be supported in a new version.
Please notice, LinkPreview will not open thumbnails for links to the
same host you are viewing.