Note: They use mPayy for payments so you have to do a short sign-up for it. The reason for the special payment processor is that PayPal and credit card processors charge excessive fees on such small payments but mPayy doesn’t. The one downside is that mPayy currently only supports US-based bank accounts.
MAIN POST EDITED TO INCLUDE US BANK ACCOUNT REQUIREMENT
Edit the post to make clear that non-US people need not bother, please.
Singularity Institute is today's featured charity on Philanthroper.com
Philanthroper is a micro-giving site that profiles small charities hand-selected by their editors. Their site encourages donors to “give every day” by only requesting $1 contributions.
A group of Singularity Institute donors has stepped forward to match all donations given through Philanthroper today so I'd encourage each of you to give $1 now if you support Singularity Institute and have a US-based bank account (Philanthroper requirement). We'd like to have a healthy total raised by the end of the day. The fundraiser has already been featured on Gizmodo but please submit it to other news sites if you can.
I signed up and gave my $1.