Taggify is a web widget which allows bloggers and publishers enhance their sites by adding visual tags to any site’s images. Visual tag is a clickable image region tagged with some title, description and link. When vistor moves mouse over such region Taggify shows popup tooltip with interesting content provided by the publisher.You can customize your Taggify web widget colors and properties, copy and paste resulting HTML code into your site and with their Taggify Editor bookmarklet you are enabled to do quick Editing as well.
Taggify widget is compatible with Internet Explorer, FireFox, Opera, Safari2 and Netscape
Source : Taggify