The story here is not WikiLeaks (ie, don't get this thread off track politically).
This is yet another example of needing to be more careful with your PayPal purchases than with credit cards.
PayPal/eBay has, and will, track down anyone who has ever bought a product they do not like and cancel their account.
For example, if you have ever been terminated from the eBay affiliate program for being "associated" with a prior banned account, and you have no idea what happened or what they are talking about - this is it.
You purchased something, such as cookie stuffing software using PayPal, and from that purchase eBay tracked you down and terminated you.
I'm not saying eBay/PayPal will necessarily cancel your account(s) if you ever used PayPal to donate to WikiLeaks. But ... you should be concerned.
Bottom line: you need to be careful about what use your PayPal account for.