I was trying to drum up support for the Indian Culture proposal in an Indian-language chat room I'd found. Anyway, I realized that while I could post the image and the hyperlink, I couldn't post a hyperlinked image, which is sort of needed if you post the image, since it had a nice, yellow "support this" button on it that you feel like clicking.
<a href=..><img></a> didn't work either.
So, could you add Area 51 oneboxing support for? Maybe not a onebox, just show the linked advertisement when an Area 51 (possibly referrer) link is posted.
EDIT: It seems that oneboxing works, just not for referrals. Fix please? Or status-bydesign?
Maybe have the referrals show the site ad, and have a nonreferral link show a onebox.