Images are everywhere on the web. Video, Flash, and other media are not far behind. Great graphics, animations, or videos add a lot of value to an otherwise boring web site. The drawback is that search engine spiders cannot read the content of these files. Nothing kills your site's searchability faster than embedding all your best keywords into graphic or Flash files. Users see them just fine but search engines see nothing. It is extremely important to communicate as much information as you can to the search engines about each graphic or media piece that you use on your site.
Google Image Search uses the file name and the alt tag to determine what the image is all about. Other services, like YouTube, Viddler, and video search engines, need help to determine what your video is about so that they can show it to people that are interested in watching your masterpiece. Make sure that you can take advantage of these powerful streams of traffic by adhering...