Interesting, I think you highlight the point that the more personal the contact is, the more fruitful it will hopefully be (see purereason's reply). While you consider all recruitment email to be spam, it seems that not all do (according the results of the experiment shown...)
Side discussion- As a kitesurfer/snowboarder/skater I think can appreciate the more technical aspects of windsurfing and not just look for 'wow' factor. But what I find difficult to watch in freestyle windsurfing is the 'sinking' or 'stopping' after tricks. It seems that in order to do anything really impressive you're going to just stop after you land. I think the best looking tricks in windsurf (and all of these sports actually) are ones where you leave the tricks with (close to) speed you entered with - such as certain tricks done on waves or some of the less technical 'pop' tricks. To me the root of this problem really comes down to the size of the gear you are having to throw around. In comparison, kitesurfing really frees your body up when riding and allows you to move around more in the air, as well as providing a 'pull' from with more freedom of control than a windsurf sail.
In 2008, Ray Kurzweil said in an expert panel in the National Academy of Engineering that solar power will scale up to produce all the energy needs of Earth's people in 20 years.
Agree. I'm very active but don't do any cycling/running/gym work. I participate in sports for the enjoyment and adrenaline of the sport itself. Way more addictive - no need for training schedules and the like. I just HAVE to get to the beach when the wind is right.
Still, that's not taking away from running, many people really enjoy it and there is no denying it a cheap way to get fit.