The concern here is bandwidth. Even with loaded 400 MHz Pentium or G3 machines, home users in many areas barely gets 56 kbps connection to their desktops. Many of this site's audience who live in less developed country would be luckly to get 28.8 kbps. The purpose of this website is to disseminate specific information to reletavely small groups of audience, not to attrack eye-balls like most commercial sites. Users can stop graphics and applet loadings by configuring their browsers to not load graphics and disable Java.
Users can control whether they want to tolerate the delay or tradeoff presentation quality.
Given the purpose of this site, most pages are handcoded and JavaScript is avoided to make the pages lean. Web traffic is low and the local network here is under utilized. So there is no perceivable technical bottleneck on the server side as far as this site is concerned.