There have been many discussions in the SEO world over the usefulness of alt tags that accompany images. It is generally accepted that Google primarily indexes alt tags as long as the images have a link. If there is no link on the image, the alt text is ignored.
Building a Customizable Server-Side Cached Scrolling XML Newsfeed Display
At EggheadCafe.com, we have resources that are added on a daily basis – both by member visitors and by the staff. These resources are searchable and are broken down by categories such as Hotlinks, Articles, Tips & Tricks, etc. Each evening , we have a script that’s kicked off by the NT Scheduler service at a time when traffic is normally low, that scours our resource database for the most recent items in each category.