Just adding my support, for whatever it's worth. Unlike others, I would be willing to pay a nominal (up to $20) fee. I know it's not a lot of money, but it would add up, I don't think a developer should have to work for zero pay. Maybe you could do like MadebyMary.com does, have a free version and a pay version. Have the free version bridge to Joomla... have the pay version bridge to CB

but the key is,
keep the fee small. It will add up quickly.
JMO!!

Bailey