In my opinion, boxtops contribution is the best for its balance. I once found myself outside an abbatoir where there was a large pen full of lambs (yes, waiting for the slaughter). The smell of blood is very distinctive and hung in the air - the lambs were the usually fabled calm flock. These things together actually made me a bit nauseous but it has never occurred to me to become vegetarian. I have no doubt at all that modern slaughtering is, on the whole, far more humane now than it ever has been but I have no compulsion to go against whatever campaign others wish to mount. Not long ago I took part in a quango discussion of labelling in the context of the (geographic) origin of food and that is curiously convoluted. Personally, I rather think I would take the approach of not really caring whether my food was ritually killed or not, otherwise I would, to be in good conscience, also before consuming it have to check for the latest inspection report on the abbatoir it came from - always assuming that is possible.