We are exposed to so much advertising these days, that after awhile, we may tune them out altogether. There's TV, radio, newspapers, magazines, Facebook ads, affiliate links, banners on websites, telemarketers, etc. Twitter recently announced that they are showing advertisements that are relevant when you search for a term. Of course, I don't think you can fault these companies, as they are a business and need to generate revenue. As we are inundated with advertising from all angles, there is one form of advertising that we still have a good deal of faith in...word of mouth.