Like they are some kind of mechanical device with acute technological advance that they have to explained at "Howstuffworks.com". There was a time ( before Wikipeida offcourse) when I would go to how stuff works to read on IR(infra red) Sensors for a science project or read on the mechanics and physics of a refrigerator if it needed repair; but this is absurd? It is categorized under science, but honestly this is more myth or fantasy. I'm not arguing about the fact that the site provides this information, which by the way is relevant and well summarized but its still deviating from the information it was popular for! Read the article : http://science.howstuffworks.com/vampire.htm A lot good sites have started to lose focus of their core competencies and branching out in every which direction to improve site ratings and visibility! Look at ask.com or askjeeves.com. These were great sites in the 90's. Over time they started to deviate under the impression that they w...