I tried to post this a while back but the site had issues - there's an app called Buycott that allows you to see existing boycott campaigns on various products for ethical reasons, from environmental to human rights, etc., and you can scan UPC codes with it, which is a similar idea but different I know, however I feel like you could maybe team up re. they have campaigns but not ratings, like if someone is boycotted, they want to know who's the best alternative out there and you'd have that sort of info? anyways one of the other reasons I suggest looking into them is they have an existing user base of "ethical consumers" that's like over a million if I recall? also you might ask look at how they launched to get an idea of how other sort of "ethical consumption" apps have succeeded or failed in the past? does this make sense?