Do you avoid using Flash/Silverlight?

Public Websites done completely with Flash or Silverlight can be very eye-catching and used in the right spots can achieve way more than you can ever achieve with HTML. But beware because:

• It does not work on an iPhone or iPad
• Flash/Silverlight can be slow loading, especially if the visitor is not using a fast Internet connection. If your website doesn't load within 5 seconds, they're gone. (There are techniques to overcome this)
• It is bad for search engine rankings as there is no content for search engine spiders to crawl through. (There are techniques to overcome this)
• Navigation via the back button (and Browser History). (There are techniques to overcome this)
• Accessibility
• Often seen with busy designs that turn off or distract visitors. Look at the biggest ecommerce sites and you notice that none of them are Flash websites
• In many cases it unnecessarily creates page bloat
• You can *almost* get the same effects and functionality using jQuery, but faster and lighter
• You get an inconsistent UI if you use it for controls such as text boxes
• Flash and Silverlight do not support CSS, so you need to follow unfamilar concepts for re-skinning

Finally, and saddest of all, when Flash/Silverlight is used, it is normally over used.