For example, some Webmasters choose to use CSS sprites (files that contain all the images that will show up on a Web page and then display them
accordingly to decrease page load times). Raman shows that you can still create alt tags with these sprites--particularly if your images are functioning as links--so that users and engines that have
disabled CSS can still access the info.
He also suggests making printer-friendly (which is coincidentally, engine-friendly) content readily available, and not hiding it behind a scripted link. "Creating actual URLs for these printer-friendly versions and linking to them via plain HTML anchors will vastly improve the quality of content that gets crawled," Raman says.