WordPress Snap by Valentin Brandt is a simple shortcode for display a thumbnail from any website. This plugin uses the WordPress.com service to generate a website preview thumbnail.
The orignal shortcode created by Valentin Brandt on WordPress Geekeries.
Easy to use !
Quicktag Button in HTML Editor
Specify a class attribute (thumbnail)
CSS3 Effect (View Installation tab)
Specify your URL(thumbnail)
Specify a height and width (thumbnail)
Specify a ALT attribute (thumbnail)
Specify a TITLE attribute (link)
Specify a TARGET attribute (link)
Specify a REL attribute (link)
Specify a LINK attribute (thumbnail)
Download: http://wordpress.org/extend/plugins/wordpress-snap/