I feel like this could run on donations. I signup, search a product and a day/week later get a mail "Did X Help? If so, care to donate a few dollar for the inf

I feel like this could run on donations. I signup, search a product and a day/week later get a mail "Did X Help? If so, care to donate a few dollar for the info we generated for you? If not, try Y, 7 studies have shown it works better than X in some cases."