They should have decided on this two years ago and reap all the benefits that an association with Bitcoin can bring. Just look at Overstock of how it created some sort of goodwill for the company even if only a minute part of their sales is coming from Bitcoin. Anyway, this can be a good move for eBay and can be a good news for Bitcoin. We have to admit that there is a clogging problem with Bitcoin which resulted into ridiculously high transaction fees but I still believe than in the long run merchants can be benefited by Bitcoin in terms of exposure and marketing mileage. Hoping more and more merchants would be joining the Bitcoin Alliance and these merchants would be joining the call and clamor to make Bitcoin the way it should be: fast and cheap.