Add Bitcoin to the donation choices

[y]

Bitcoin would be an easy way to donate to CPAN authors.

[sailfree]

And Paypal too!

[NotBugger]

bitcoin donations are a great idea. this would be even cooler if it bitcoin bounties could be integrated into rt.

i want to anonymously donate, and bitcoin is the best option to do that

[ranguard]

Moving to wishlist: https://github.com/CPAN-API/cpan-api/wiki/Wishlist