Google Web Accelerator reveals flaws in traditional web applications

I just read an interesting alert for Web Designers by Khoi Vinh. Apparently, Google Web Accelerator is causing havoc on some HTML-based web applications with its prefetch behavior. By trying to prefetch all content linked from a page, it effectively ends up "clicking" on each link. On a normal web site, this would probably be safe enough. But what about a traditional (HTML-based) web application?

Imagine you're checking your web mail using an HTML-based webmail application. You log in. Google starts prefetching links, starting with the "Delete All" link! You get the picture.

Not surprisingly, SWF-based web applications (Rich Internet Applications or RIAs built using Flash, Flex, etc.) are not affected by this.