Originally Posted by TheCyberDruid
And there will be Silverlight. Being a kind of 'frontend' to ASP(X) sites it will become quite popular for rich internet applications too. Like alex said none of the three are available for OWB, so I guess it's useless to debate which one is the most used one in one or two years
Flash is the big daddy of media on the web, and we're due a certain level of support on OS4 soon (through Gnash). Microsoft has got a big battle on it's hands to get Silverlight anywhere near as popular as Flash.