I looked into google checkout after this all went down and it seemed promising, but you have to be a business to use it. They won't let an individual register and therefore I can't really see how it works if someone does charge back.
And that reminds me of whats really wrong with paypal. If you pay with a credit card you can do a charge back 180 days after you make the payment. At that point, your money gets refunded to your credit card company by paypal and can ONLY be overturned if the seller proves to your credit card company via information submitted through paypal that they did in fact sell it to YOU. So if you simply sign someone elses name, or have it shipped to a neighbor, its impossible for them to prove it.
That's how ebay worked for years!