The yellow to white trick was pretty clever. But it seems 8 years later that they're still struggling with usability & design. Amazon has me nailed down...I haven't gone to Ebay in ages.
And I know compete & quantcast aren't perfect, but these aren't good signs:
http://siteanalytics.compete.com/ebay.com/?metric=uv
http://www.quantcast.com/ebay.com#traffic