Extractor? On a mac, you just have to rightclick on the LP file and do a "show package contents." It's just a bundle that uses HTML5/CSS3.
Doesn't take a lot of work.
I'm on a mac, and my software update didn't even offer me Safari 4 beta. You have to go to Apple's website and choose to download it.
And the original article discusses Safari 4 beta's adoption vs. Safari 3 beta, which did not come out in 2004, so the post that says "when Firefox came out most people didn't realise they even had a choice. It's hardly a fair comparison between 2004 and now" is the one that obviously didn't read.
Nor did you.