Well, like I was saying, as long as no profit is made on liscensed material. We could post links to e-bay auctions for the games being sold on e-bay or other related items on e-bay. And as long as no money is made on the actual Chrono product, there should be no problem. You could sell Chrono Compendium things like tee shirts or mugs or something. That's promoting the site that is, in turn, promoting the product. And no money is being made directly off the product. This would be a good way to get the website out there a little more and maybe spread the popularity of the Chrono series.
I understand liscensing complications, and I admit, I'm no expert on them. As far as I know though, as long as no money is made off of their product, then it's ok, and as long as no ideas are being stolen or anything. I don't see why a fan site couldn't sell T-shirts or other various items. I think it would actually help Square by promoting the series and getting more people interested.