@domino - quite right, I thought I was copying from the Aus User Agreement. 

Either way, the implication is the same: 

When you upload content to the eBay website or otherwise give us content, you grant us a non-exclusive, worldwide, perpetual, irrevocable, royalty-free, sublicensable (through multiple tiers) right to exercise any and all intellectual property rights (including copyright and trademark rights) you have in the content, in any media known now or in the future, for the purpose of the conduct of eBay's business insofar as eBay, acting reasonably, determines is necessary – including for marketing purposes, the creation of buyer experiences onsite such as product pages and the display and rating of products, and in catalogues on its websites.

If you are the author of that content, you also irrevocably and unconditionally consent, to the maximum extent permitted by law (either present or future), to eBay and its licensees, contractors, assignees and successors, and their licensees and any other person authorised by any of them (“eBay Authorised Persons”):

(a) disclosing, reproducing, copying, adapting, publishing, performing, exhibiting, communicating, renting, transmitting or otherwise using the content (and any adaptation or part of the content) anywhere in the world:

(i) in whatever form and in whatever circumstances eBay and the eBay Authorised Persons think fit, including adding to or otherwise altering the content (or any adaptation or part of the content); and

(ii) without making any identification of you as the author in relation to the content (or any adaptation or part of the content);