The world wide web is full of mythology! About everything. When any of my kids would spout something off at the dinner table, we made them source it. If they ever said, "I read it on the internet!" We would have a serious teaching moment.
One of the most prolific industries full of myths is real estate, in my opinion. There are opinions galore. Check out what I think are the top offenders and hear what several top real estate bloggers have to say.