All of my new Web content will contain in-line thumbnail JPEG images in static HTML documents, just as before. I don't think the static documents are a big limitation, though. JPEG is here to stay.
Little pictures surrounded by text are here to stay.
Depending on the speed of connection, monitor size, and plug-ins loaded, a user will have very different desires for the bigger image. Ergo, all of my new thumbnails are now anchors pointing to AOLserver Tcl scripts. These little programs run when you click on a thumbnail. Because they are programs, they are able to check the incoming headers for a Magic Cookie. If you have a small monitor and slow network connection but the latest and hippest plug-ins, you can request that the thumbnail be linked to a 250x400 pixel FlashPix.