A (suprising) article on flazoom.com titled A Cancer on the Web called Flash has some good advice,

The best way to combat the stereo-types that are developing is to be smarter about how we use Flash. Think about the problem that you are trying to solve before you open Flash and start working. Is Flash the only solution for that problem? Is Flash the most effective solution? Can you solve the problem with HTML? Think about the work you do and remember that what you put on the web is not for you, but for your visitors.