Your Website is GREAT! You have it organized very user-friendly! I want to set-up a Website with my resources similar to yours. I'll take a look at the Protopage as your suggested. I also want to share one Website you may be interested in: http://www.classzone.com/books/earth_science/terc/navigation/visualization.cfm
has lots of simulations that are very useful with all areas of science. I hope it is something you can use. (I didn't notice it on your site but haven't perused your entire site yet.) Thanks!
With your passion for Web 2.0 Resources, I recommend you take a look at Wiziq's virtual classroom and authorstream's power point presentation platform. Both are web based platforms, have a bunch of features and free basic service. Here’s a public class recording conducted by Nellie Deutsch on Technology Integration.