FLASH is a cool technology, and if used well, it can greatly help the image of a company's website. However, if not used well, it can damage the user experience and SEO of a company's website.
Si Yi O once conducted user experience and SEO surveys on many enterprise sites that used FLASH design. It was found that most enterprise sites like to use FLASH technology to design their homepages, and most of the text, links, and other information are designed into the FLASH.