The last time I used my Auctiva account, I was quite unhappy. I usually included 24 images in my auctions, and the listings gave buyers the option to "supersize" the images. This promised (by Auctiva) was gone from my last set of listings. I sent an inquiry, but my time would have been better spent peeing into a fan, because my inquiry was ignored. I'll try one more time, but then it will be time to leave.
I just looked at Auctiva's site and it now has this message, hidden within the site: Please note: Due to eBay's recent change to their link policy, the super size image feature will be temporarily unavailable as we work to build a replacement feature. The new super sized image feature should be available in the near future so stay tuned for the release announcement. We're sorry for this inconvenience, and thank you for your patience. (Who knows how long this has been here?)
Auctiva's promotional materials lie in continuing to say you have this option. Based on other reviews, I'd say Auctiva has outlived its usefulness.