I sweat more than the average person when I do physical work and when I play sports. I simply get hot and my body starts sweating overtime. This isn't really a problem. After all that's what the entire sweating process is all about--keeping your body safe and cool, and no one really thinks much of all the sweating when I am on the basketball court or the baseball diamond.
However, sometimes I start sweating in situations when I am not physically active, and like the article says, this can be embarrassing. Once I was in typing class and the sweat starting popping out on my forehead. The more I wiped at it, and the more I worried that I was sweating too much, the more I sweated.
This hasn't happened often, but like I said, when it does happen I get very self conscious and that seems to make the sweating even worse. I don't know whether what I have is considered hyperhydrosis, but I'd say it's not normal or average.