Free Rice Scam?

Logged on to free rice and completed 4000 grains but another link sent me to a whole list of articles saying it was a scam!! Although "some" rice is being donated and it is under written by the World Health Organisation it seems that it is not a charity and is mostly a money making enterprise for the owners of the site who have made over a million from it already. not sure about continuing with the project - will have to think about it, check it out a bit more and if it is definitely a scam choose a different 101 instead of it but am debating whether it should be a charitable one or just something really fun.