Don_s, I can understand your frustration at seeing the same questions posted over and over but, in fact, that's absolutely necessary for forums like this to accumulate good information. No single thread is going to contain the best answers to the question.
When a question is posted it's usually visible only for a day or two and gets pushed down the list quickly by newer posts. It may be that you're lucky and the people who actually have good information happen to see it on a given day but it's just as likely that it will be seen only by the uninformed but highly opinionated.
This isn't an encyclopedia, or even Wikipedia. It's amazing that there's as much great information as there is but, in part, that's because the same questions get asked over and over and, eventually, the good information gets sifted out.