Comment by Dusseldorf

I've basically shifted to negatively weighting any advertisements I see, the thinking being that if a company needs to advertise, they're more likely to be a scam; companies who are actually great at what they do can survive off word of mouth (or at the very least, don't have it in their margins to pay someone to advertise door to door.) Basically the same logic as the old "never go to a restaurant that has someone standing outside trying to drum up business because it's a tourist trap."