Original sentence: PayPal became the payment method used by a majority of eBay users (it was also the default choice), and the service competed with eBay's subsidiary Billpoint, as well as Citibank's c2it, Yahoo
Edited sentence: PayPal became the payment method of choice for more than fifty percent of eBay users, and the service competed with eBay's subsidiary Billpoint, as well as Citibank's c2it, Yahoo