What's the stance on selling stuff in handhelds boards?

I just would like to know what's the official stance of mods about sale ads in the Handheld (and I think I've seen some in Arcade Central too) forum. Even if they are about related stuff, I don't see why can't the regular market forums be used for that. So I think there should be an "official statement" about wether this is OK or not so we know what to attend to. Thanks.

I kind of like seeing the arcade stuff for sale in there, because I don't check "everything else" all the time because it's full of other stuff I'm not really looking for. I think it helps to disperse the threads