[Note: this is a repost from the old UsabilityBlog. I’m just moving some “greatest hits” over to the new site.]
Here’s one thing they did wrong: They provided half-hearted, linkless “help” in the form of “to do x, go to [place A] or [place B]“, without including links to those locations. This is a no-brainer and should’ve been coded ages ago.
Somebody please add that to the eBay UX fix list.