Flash Plug-in For iPhone Coming Soon?
At launch, the iPhone version of the Safari browser is missing some plug-ins needed for playing common types of Web videos. The most important of these is the plug-in for Adobes Flash technology. Apple says it plans to add that plug-in through an early software update, which I am guessing will occur within the next couple of months.
Adobe's Flash plug-in is required to play Flash content which is commonly used in certain aspects of web design and web-hosted videos. Apple managed to get around this requirement with Youtube by converting Youtube content into h.264, which the iPhone supports natively.