Don't let me wrong. Of course in alphabetic order FireFox

, Google, Microsoft, Opera

and Yahoo will try to make the first net OS
It may be distributed as:
AlienOS.XML.CPP

file or files.
A Web Document is a node tree, and so is the Internet. Should it be so much more difficult to make a register system on the branches (leafs) of this tree. In the end it is a bitstream
There is not so much functionality yet on a SE's index, even if
Google Labs is a good start.