wrote ...
Take a look at some of the papers on the site -

http://www.winggrid.ch/AIAA-2004-2120.pdf
http://www.winggrid.ch/AIAA-2004-2120.pdf

Since they aren't selling anything, and they are doing both real world
experiments and academic papers with plenty of data collection, I
wouldn't call them snake oil.

Snake oil is far too nice a term for what they're peddling. Did you read
the paper? In the first sentence they throw out a hundred years of
aerodynamics and replace it with their own. Why? Because the old stuff
doesn't give the answers they want. They don't justified it further than
that. They then go on to claim span efficiency factors of 1.5 with their
system. If you understand anything at all about wing aerodynamics you would
know that's an absurdity.

Sometimes people want to believe things so badly that they can't see that
they're leading themselves astray.

Rich