Just in case your donation to a journalist is not something you want publicly visible in a blockchain: we have removed Bitcoin as a donation option.
Dark.fail is now Monero-only to protect our donors from blockchain misinterpretation/pseudo-analysis.
Instead of giving up on #Bitcoin please kindly consider using distinct #Bitcoin donation address per user and/or a PayNym. Then CoinJoin as per standard best practices. That should sufficiently protect your donors. I hope you will reconsider.
Everyone can sit here and reply about how he could have done xyz and still used bitcoin, but if he implements Monero, neither the sender nor receiver has to do anything special, and all the transactions will be private. That’s the point. The end.