1.yes, anytime new media is used our perception of art is changed. Yet, it is similar to past art in its being of a entertainment structure as a art form.
2. I think the digital art work of earlier artist must be view separately. In comparing one to newer digital art, you have to recognize the first digital works as building blocks for the new.
3. It is art if someone finds it to be art. I believe it to be art. I don't know if there is any aesthetic criteria? The term netart doesn't bother me. Other art movements have had similar names, like Pop Art.
4. How do you think would be good ways to stimulate the user to dive into this new world of art?
If the users were able to be identified as a limb of the artwork, since their interaction is important for the art's existance.
What do you think represents an appropriate environment to present net based art to an audience?
I think the personal contact between a person and the computer screen is the most appropriate environment.
If you would be in the position to create an environment for presenting this type of art in physical space, how would you do it?
first thoughts is a inclosed box that viewers can travel through, connect the different netart works together.
5.As Internet based art, as well as other art forms using new technologies are (globally seen) still not widely accepted, yet, as serious art forms, what do you think could be an appropriate solution to change this situation?
The placing of netart in museums, or attention from media.