It's the interim solution. But the problem is that d-link is visible, many folks won't use. If we could get longdesc, tool support would come quicker. It's less intrusive. Yes, many would like to use longdesc.
Disadvantage is that d-link is visible.
WC Ways around that, to hide it by using style sheets or transparent images. WL Works great for people who are blind, but not for me. Not intended use. In IE title on most anything, when mouse over will pop-up. How long does it stay up.