Competing against eBay is like saying you're competing in a 100m race against someone in a wheelchair. eBay has done nothing to make itself better in the last 15 years. New "features" routinely fail, and their APIs are a graveyard of dropped ideas. I hope Taobao expands to the US, eBay needs real competition, anyone working there should be embarrassed for themselves, more importantly the Directors and above.
If you noticed, Chinese dotcoms are extremely bad at overseas expansion, unless they are the only fish in the pond (original alibaba.com)
I personally know the man who was singlehandedly responsible for 70% of Alibaba's overseas revenue, and he quit the company because after 5 years of hard work, he was not only not promoted, but got his position superseded by a guy "with big business cred". Soon after, their overseas revenue flatlined.
This tells a lot of their culture in the company.