I know since June in the UK, PayPal have upped the "return" period to 180 days. Now it's our turn in the US starting some time in November. This 6 month period to use/abuse products and then claim SNAD/etc is beyond a joke. It should be unlawful.
Anyhow, I can see a LOT of sellers wanting to get as far away from PayPal as possible...and this is obviously something that can't be done on ebay. ebid, PLEASE look into incorporating at least one other payment processor (apart from Google and Skrill) so you can push that as a major selling point in getting people to cross over. Having a choice is always better than having no choice at all. Dwolla or Stripe maybe?