The latest video offering from Matt Cutts in which he talks about the importance of optimising your site images for Google Image Search.

This type of optimisation can be particularly important when imagery is integral to your business offering, for example if you are a photographer, designer or artist.

How to Optimise Images
Ann Smarty has written an excellent post on how to optimise images for people, Social Media and the Search Engines, see: http://www.seosmarty.com/image-seo/

Another Thought
If you really want to get your images out to a wider audience sites such as Flikr.com can also be a great way of posting your images and putting them in front of a large audience of image enthusiasts.