I mentioned it before in the open thread for the month, but I donated $1000 to the SIAI's current donation drive. I've never given that much to a charity before, and I doubt I'll be giving as much for a long time, but the donation drive seemed to be floundering, so I did what I could.
This discussion-level article is a handy place for people to share info about their recent donations, especially donations to unusually efficient or effective charities. Feel free to post your one-time donations, your recurring donations, and/or any interesting changes in your donation habits. Gratitude and appreciation for other people's donations is also very welcome.