PayPal is annoying, but at least it integrates easily and doesn't require you to install proprietary Javascript or the like on your own website (like stripe.com does).
Bitcoin is possible to do with 100% Free Software, but it's very difficult to set up.
I think most people don't realize how much work goes into these things. Most non-profit organizations have a huge staff that can set up things like this. Conservancy doesn't.
$ sudo apt-get install bitcoind
$ mkdir ~/.bitcoin
$ echo rpcpassword=password! > ~/.bitcoin/bitcoin.conf
$ chmod 600 ~/.bitcoin/bitcoin.conf
$ bitcoind -testnet &
$ bitcoind -testnet getnewaddress SomeStringCalledAccount
Note the -testnet bit. I don't actually have any idea how bitcoin works. The commands above created a lot of binary files under ~/.bitcoin/testnet3 and spit out a magic-looking string: mr2c2XZwe55xYPqVUkQ8sroi6X674UXJmb ... which I think people could use right now to send me test money on the test net.Anyone: Does my bitcoind even need to be running for them to do that?
Too often, people think "it's easy for me to set something up for myself to use, it must be just as easy for a non-profit it do it". It just isn't.
And yes, I'm Bradley Kuhn.
Naive question: could one of your core members accept bitcoin on behalf of the Conservancy and manually convert the balance into a paper check or wire transfer periodically?
I expect that the very public nature of bitcoin transactions would discourage embezzlement. A little script added to https://gitorious.org/conservancy/website could display the transaction log.
"Sorry, t-shirts and recognition aren't available for bitcoin donations at this time."
shrug That's how I'd do it. </free advice> :)