Have you thought about modifying it so that it's not just eye candy, but can also be used for navigation (like proceeding to the page uncovered behind the curl)?

aside from that, it would be also nice to put some real content behind the fold (EG: a preview for the next page or something).

One question: Why?

Well, at least the creator seems to understand the gimmickyness of the effect:

But please, use it wisely. If it starts popping up everywhere and becomes “that annoying javascript thing”, I'll be very upset.

Because some people deeply lust after the page turn effect. No accounting for taste...

Probably because he was sick of using flash to make something "flashy" that catches the user's attention. But yes, use this sparingly.

It would be "gorgeous" if it was animated, but as it is it's kind of kitschy. Doubt I'll be using this in any of my projects.

Try clicking the "demo page" link - it can be animated :)

It would be cool if this could be used to mark important pages on a site by individual users. Sort of like a bookmark, but more user-friendly. Users could quickly see a list of pages they have dog-eared and go back to them.

Congratulations Elliott, you've invented a new ad product.

I certainly hope not :|

He does not bother mentioning that it does not work with internet explorer. It would be nice if ie already was that irrelevant.

Thanks - fixed. It now works with IE7. IE6 is a lost cause.

Doing this kind of thing is good publicity for his blog.

I won't use this, but I would think about modifying it to my own tastes.