Did we not have this discussion a while ago, with the possibility of a board games submarket being overturned?
I don't see there being any problem in linking to boardgame deals on other sites, even if it's places like Amazon that you wouldn't be allowed to link to if you were discussing computer parts. OCUK don't sell boardgames, so other sites aren't competitors in that regard. I would wait for mod clarification on that before anyone does it, though.