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It's entirely possible in 2004 because Google simply isn't picking up on a lot of cloaked pages that are out there and in their index without the willing and able assistance of savvy SEOs with either a grudge or a penchant for righteousness letting them know about them. Or maybe they're just Matt Cutts (The Spam Czar) fans and want to cozy up. ;)
I just came across one this week sitting in a #1 spot for what certainly couldn't be considered a competitive search term by any stretch of the imagination - redirected to the homepage of a <cough> directory </cough> site.
Pity of it being that it took 30 seconds to figure the thing out, since what's in the cache is not at all the same as what you can see with view-source: in IE.
Are the pages you're seeing redirecting cached or not? Either way, check them out with view-source: in IE or with Opera with JS disabled (easiest of all to do in Opera) and see what you can see.
Then it's your personal choice whether to blow the whistle on them or use your find as a research/educational tool to figure out a bit about what's honing in on the algo.
Just a couple off the cuff ideas.
The guy want to have hundreds of sites and thousands of pages been list on SERPs but do not want his name associate with his publics sites?
That is nonsense!
If I was Google, or any other SE, I will not accept anonymity.
All Google can do is try to change their algorithm enough so that cloaking won't always be enough. Their recent shift to authority sites (hilltop?) certainly knocked out thousands of cloaks. I don't think that Google's algorithm has changed so that more cloaks are ranked higher, I think that the number of cloaks has risen dramatically now that they know Google don't ban them.