NASA contacts George Dvorsky about his Dyson Sphere concept

Wow, That must be very exciting for him.  Congrats George .

Just reading some of the comments from the links posted, some of the criticism and suggestions were that it would probably better to utilize materials from the asteroid belt which doesn’t have too much gravity or exposure to solar radiation (as well as more usable materials, may even lower the risk of asteroid impacts on earth) and that strip mining mercury and the sphere itself could disrupt the gravitational influences on the sun and the earth (or something like that).  It seems you can get a lot of good info and input from regular commenters.