What do you think of this: http://pr10.com/

I don't really have a comment, but I do have a question. How many use invisible text? I've never done that.

It's a parody.

That's what I get for scanning through it. I read that part and thought hmm do people do that? rofl

No, they actually hide it.

I love the copyright.

Yea but Google is far more tolerant of hidden text than they'd have you believe. Won't help your rankings all that much, but from what I've seen on sites I've reported as spam, it doesn't hurt them much once Google sees it either.

I wonder how much more you could be doing with pr10.com...

Good point there. That would be a great url for a real seo related site.