Answers For Questions In The Comments:
1) I can do Paypal donations in addition to Amazon. Sure. After I fix all the bugs ;-)
2) Hosting graphics. Eventually, I plan on *trying* to code in the ability to have us hold graphics and then ftp them to your blog when you apply them... a la Blogger. Down the line though. The traffic from the site as is right now is almost enough to make me go over my monthly bandwith allotment, so I can't host graphics.
3) I track who applies what skins already (That's how I get the # downloaded count). I'm not sure if people would object to letting skin authors see who has used their skins. Thoughts?
4) What we do with your Blogger username and password is store it, encrypted, in a database. Then, we use that information to talk to Blogger to get your posts for previewing skins, to get a list of your blogs so that you can choose one to apply a skin to, and to apply a skin to your blog. That's it. I never see what your password is, and neither does anyone else. There's just no reason to. I can't make you trust me, but I can try ;-)

And yes, I am working on the bugs. It's just not going well. Sorry.