Looks like a nice tool to debug/analyze web pages.

"Flash is rich with capability and can be made highly accessible. That it is unstable on Mac and Linux is one reason Apple chose not to include it in its devices; that this omission will change the way some developers create web content is certain. If the first thing it does is encourage them to develop semantic HTML first, that’s a win for everyone who uses the web."

Yes, "view source" is good. It's basically the best thing ever. We learn by example – and the fact that stuff like this is "open" helped HTML/CSS/JS to get the importance it has these days.