I abused $chr to a very high extent and made a /WHOIS theme. I was going to make a complete theme out of it, but got pretty bored..Love it or hate it, whatever. It looks best on a black background and not all possible WHOIS raw's are covered.

I've seen this done in multiple "free shell" channels on Freenode and other IRC networks. Basically, if you need a system where users need to get a certain amount of vouchers in order to get something, you can use this.