All vehicle manufacturer websites use flash for everything and sometimes it's very broken with the Linux version of it. Other sites have flash ads that you put your mouse over and the ad extends, on my machine it's just extended all the time. There are also alot of fun flash animation around that people like to look at in their leisure.
House of Chton (not giving the URL cuz unsure of the spelling) requires Flash8 and from their commercials it's not very aparent what it is. In short alot of online content is done in flash and flash for Linux is not only outdated but not as good as the Windows version. Also as far as I know there is no alternative technology.
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