Dreamer - check out
www.nosweat.org.uk. It is an organisation trying to overcome poverty pay and union busting. Don't know if they have a Netherlands branch but they might do.
Heres another great one for Maccy D's. Someone mentioned that you cannot have their milkshakes if you are vegetarian? Well avoid anything cooked either (including the vegetarian burgers). It is all fried in animal fat anyway apparently. I am not a vegetarian but I still think that that is a little dodgy.
Also, the reason they cut down the rainforest is that it provides cheap grazing land for cattle. The major problem with this is that without the trees the soil only stays fertile for a year at most. So once they have moved on there is pretty much nothing you can do with the land. The reason is that it is usually large amounts of detritus that make the rainforest so fertile, but it is held together by tree roots. So once it has been cleared for grazing the fertile elements of the soil will erode very quickly.
Generally the industrial scale breeding of cattle causes all sorts of problems. Did you know that they contribute to 1/4 of all methane emissions? So they contribute to global warming as well (it sounds funny but it is also true).