If you want to donate to SIAI, I have an offer that will probably allow you to donate more!
My Radeon 5970 should generate close to 125 BTC per core per month at current difficulty levels. For an up-front fee of 70 BTC (about $60) or more, I will direct one core at the server of your choice (I recommend a pooling service like that at mining.bitcoin.cz) for one calendar month. I will gain the certainty of paying my huge electric bill, and you will gain a better-than-80% expected profit in only a month.
If you're interested in this offer, message me with a bid. Preference will be given to higher bids and to those who plan to donate some or all of their profit to SIAI---the higher the promised donation, the better.
If you're interested but don't know how to set up a mining server, I will walk you through it if your bid is accepted. It's really quite easy.
I bid 33 bitcoins and all profits will go to SIAI
Now you can donate to Singularity Institute using Bitcoin.
Currently Bitcoin mining appears to be profitable as only bubble economics can be. Already some Less Wrong users have purchased GPUs and started mining Bitcoin. Please consider sending some Bitcoins to SI at address 1HUrNJfVFwQkbuMXwiPxSQcpyr3ktn1wc9
2014 Edit: Please donate Bitcoin by using the Bitpay link on MIRI's donate page. Thanks!