Foreign language track-backs

I’ve recently deleted a few foreign language track-backs as can’t tell what sort of site they are coming from. I always have a look at the source site before deleting but if it’s a language I can’t read and there are no images that relate to the subject “tracked back to” then I have to assume they are spam. If you want a trackback accepted for a for a foreign language site please give me enough info to make a fair decision.