Quote - Just a couple of things

Have you run anything like this before?

No, but I have run many websites before. I have not run a 3D art site which is why I want to start a site that's related about 3D artworks.

Quote - what will be the upload & down load speed of the propsed site? what country will it be based in?

It doesn't matter where the art is hosted. A member can upload it on the site or a member can post a URL link to the artwork that he or she wants to enter.

Quote -
Who keeps copy right on any artwork submitted?

The artist keeps the copyright.

Quote - How do you plan on stopping what happened here when friends keep voting the same artists in time after time?

I know something like this would definitely happen sooner and later which is why I need members for the beta phase of the site. So, I will ask their opinions on this issue once a few days or a week has passed when they know the daily routine.