What bothers me more is that people have been powerless in helping Wikileaks with their struggle. There are people who want to donate to Wikileaks but are unable to do so in an easy manner because of the blockade. It's a really good demonstration of where power lies.

You can mail a check. Very old-school, but it works. Banks like ING can mail the physical check for you, making the process as easy as using paypal.

They also accept bitcoins, which you know nowadays are cheap :P

I am sure they had quite a few, and their recent crash in value probably did not help much.