Hi,
just finished a neat service that lets you display thumbnails from websites in image tags.
The thumbs are created on the fly if they do not exists yet. You can influence size and quality. Thumbs are stored for 72 hours, then they will be deleted. A recurring request for the thumb will recreate it, so it is ensured that the thumbs are always up to date.
If you wish to check it out, use this:
http://www.artviper.net/screenshots/screener.php?&url=www.yourdomain.com&q=80&h=150&w=150
Of course change the domain name and the size and quality settings to match your needs.
Have fun.