Why not just give everyone the icons every week and let them download them without silly stuff?
This points and swapping thing is really a pain. I don't see any reason why when I log in that I should have disabled icon downloads until I play some swapping/point gathering game.
You either want me to have the icons or you don't. And if you do, then don't make me play silly pointless games.
Maybe a newsletter announcing the latest sets to download, and if you want general discussions, introduce them in the newsletter and encourage participation. Maybe set up some sort of forum where people can provide helpful info on working with the vectors and other art related stuff. Maybe some web design stuff too.
But the swapping game and collecting points isn't fun. It already takes a long time to download the icons, since you only allow one download at a time and you can't use a download manager to schedule and automate it. I am on slow dialup right now, and if I get disconnected, I have to start all over again. That's not fun either. Why make it take even longer with stupid games?
The only reason why I have put up with the stupid stuff for so long is because you really do have good quality artwork.
In other words...I really love your product, but I hate your site.
Oh, and if you want to encourage more people to buy the icons you have for sale, maybe you could sell individual icons too. Some people don't want an expensive full set and being able to buy just the ones we want or need would be awesome. (you could even feature a few in the newsletters) There are a few I certainly would buy if they were offered individually, but as a huge set I can't afford them.