Wasn't there a rumor going around last year about ebay creating their own currency instead of adopting bitcoin? I wonder which would be more likely?
It seems highly unlikely that ebay would do something like that. It would be admitting that they want to have total control over theirs monetary transactions and do not trust Bitcoin.
They would be criticized by everyone... More likely scenario will be ebay partnership with some company which create some new coin, maybe PayPal or Visa.