Great, a little bit late but otherwise it’s nice to know eBay takes the time to deal with issues like this. I got a nice email from the eBay staff earlier:
“Thank you for your report about another member using your image in their
mountain bike listing (item no. 2028518719)without your permission.
Let me reassure you that it's our top priority to ensure eBay remains a
safe and reputable place to shop. We have taken the appropriate action
in this matter and have removed the listing from the site.
I'd also like to mention that members are often unaware that using
images or text found on eBay, or other sites on the Internet, is against
eBay policy. So, in addition to alerting us in future, please feel free
to refer the member to eBay's policy page at:
http://pages.ebay.co.uk/help/sell/copyrights.html
There's no foolproof way to stop people downloading your online images
and saving them. However, you can discourage it by adding watermarks to
your images using an image editing software.
Thank you again for bringing this matter to our attention, we appreciate
your assistance in helping us keep eBay a safe and fun place to shop.”
I think I might take their advice on that watermark thingy…