I believe that at first there will be some apprehension and it won't be as easy as you describe. Nevertheless, after the second year when the number of arrests based on the identity/tracking chip increases from 73.053 to 127.314 (including 23 violent/dangerous offenders) the public confidence will rise, countering initial bad coverage and concerns about the cost and privacy issues.

I use it to change keyboard layouts, other people use it as a backspace or escape. Some applications use it for changing between different modes. In any case, who cares if they remove it? Quality of comments will not improve, even for those who will post using Google Chrome Notebook.

Why is everyone assuming that the "colonists" will die within days of arrival? I am willing to bet that there will be lots of volunteers for one-way missions to Mars (provided good chances of survival).

So most people don't mind sharing personal information with these "friends", but when it comes to sharing their email is where they draw the line? I would think it would be the reverse. Many people have my email address, very few of them know who I am dating or what I did last night.