1 I am afraid that direct democracy is possible only in local communities, where people know each other eye to eye. I don't think that those in power, those you mentioned would let NET out of their control. Do not forget who created it in the first place.
2 The other problem is - are average people mature enough for democracy? It is not the question of being kind in simple things. That is easy. It is the question of being able to give away of some of the fabricated needs used to buy your vote. The truth is always bitter.
"We will bomb somebody far far away, but do not worry about it, it is for their good...and you'll get the part of it, like cheaper gas, better health insurance, a new car, iphone... more human rights so we all be happy! Yeah! Vote for us!" π
3 Or like in this movie http://www.imdb.com/title/tt0387808/?ref_=nv_sr_1