Like Len, I have a bit of a problem trying to donate. I'm OK with giving you all of that information, but when it asks for my credit card, Firefox gives me a warning on that page (exclamation icon on the address line) that says "This website does not supply identity information." I'm not willing to risk putting in my credit card information on a site that isn't clearly secure. (& Kind of ironic that Len's concerned you're asking for too much identity information, but Firefox is warning that your site is refusing to disclose identity information!)
Couldn't you take donations through Paypal? That would probably solve Len's concerns (as much as possible), and I wouldn't have to worry about how secure the page is. Otherwise, could you update your certificate (or whatever's causing Firefox to warn me), so I can donate?