This is, technically, an effort by people to ensure Theora is usable in most web browsers. In other words, they're bringing a decoder to IE and any that don't s

This is, technically, an effort by people to ensure Theora is usable in most web browsers. In other words, they're bringing a decoder to IE and any that don't support Theora ... if the user has Silverlight/Mono. I see a win/win here, if it's opensourced!