Credit:
Google Checkout, which launched on June 29th, has been banned by eBay - it now appears on their list of payments that aren't permitted. From the site:
Payment Services not permitted on eBay: AlertPay.com, anypay.com, AuctionChex.com, AuctionPix.com, BillPay.ie, ecount.com, cardserviceinternational.com, CCAvenue, ecount, e-gold, eHotPay.com, ePassporte.com, EuroGiro, FastCash.com, Google Checkout, gcash, GearPay, Goldmoney.com, graphcard.com, greenzap.com, ikobo.com, Liberty Dollars, Moneygram.com, neteller.com, Netpay.com, Nochex.com, paychest.com, payingfast.com, paypay, Postepay, Qchex.com, rupay.com, scripophily.com, sendmoneyorder.com, stamps, Stormpay, wmtransfer.com, xcoin.com