http://www.irs.gov/taxtopics/tc506.html
The exception is if your faucet is operated by a qualified charitable organization, and giving out coins is part of the organization's charter. But this doesn't appear to be the case.
Well there it is, thanks Soros! I knew my wandering mind while driving was crazy! So someone would have to create a faucet that only paid out to qualified organizations which would be nearly impossible and entirely unpractical.
Why create a faucet solely for that purpose? You can still create any normal faucet and incorporate a charity feature into that, and those donations could be regarded as a
taxable expense. You might still remember the suggestion I made for faucets to alleviate poverty, http://www.bitbiz.io/threads/poverty-is-faucets-the-answer.551/
and if you follow that example... you might just have a case to claim from tax for this purpose. I think it might be doable....