A:Some people do not want ad-hoc answers to certain questions. Example: Do I need to see a doctor about this rash(insert pic). Asking a five dollar question that will be answered by a doctor who makes a 50% cut is a lot cheaper than going to the doctor to ask and paying $60. Yedda would still make $2.50 on the question. This is worth a lot more than a $.10 click through ad. While ads are nice for extra revenue, it is hard to base a company off of Google ads and really be taken seriously.