Actaully, when I say "No Blind Linking" I means that I don't allow any kind of misleading link to a sponsor site.

this would include but is not limited to placing a link on a thumbnail, so the surfer thinks they're going to see a full size picture, but instead is directed to the sponsor's site, or it can mean adding a link to a full size image. Anything which would produce a result other than exactly what the audience would expect is considered a "Blind Link".