Graphics are large, attractive, and appropriate yet at relatively low bandwidth cost.
The surf background sound is a very good idea, but it is more respectful to 'offer' it to the reader, to ask them if they want to hear it, rather than just sending it to them. Forced web page sounds often intrude on other music the reader has playing. This is generally not a very good idea, mainly because the average user is used to seeing visited links in a different color from unvisited links. Given a list of links to follow, the user first looks into the ones that most interest them, then may look at others, but with the visited links the same color as the unvisited links the user is easily confused as to which links he has already visited. Many browsers condense all multiple elements into just one, Spry Mosaic for instance.