You have one little problem, the program has to know, which instructions cancel out. So you probably have a list of pairs in there somewhere. As soon as that is known, the program can be normalized back to the "core code". The other problem is, that you would have to be very careful to remove the canceling instructions in the virus before you rescramble it or the size would quickly get prohibitively large.

The randomly chosen registry keys won't help you, you have to get the thing to be executed, so you have to write something in a fixed number of keys. That should be enough to detect it.

The "scrambled" server key is a tactic Conficker is using. It generates and queries a large number of domains, but obviously the sequence has to be in the code somewhere so a server can be setup which has the right name at the time the thing tries to connect to it. Just scrambling the address in the "client" is useless, if there is no server.

The web server says "hey, here's a cookie you can store for me, if you like, and send it back later to assist me. Do with it as you please." The user's browser either ignores it, or later sends a copy. If this isn't consent, I don't know what the hell is. So the HTTP protocol itself already ensures that all websites are compliant.

I would so like to see you argue like that before a judge. Do you honestly believe that a computer can agree to something for its user without the user knowing about it in a way the law would accept? Sorry, but I don't believe that it is possible and I have a hard time to believe that something along the way of "but the user could have changed his browser settings so he gets a chance to agree" would work either.

For international users there is also often the problem that some of the questions make no sense. I never was to anything I could compare to a high school as the system is different here. So the number of questions is even smaller. I also saw a system you had to select two questions. From two lists of 4 non overlapping questions. So even there reducing the number of possibilities.

But what really annoys me is, when one of those things only accepts characters and perhaps numbers and even limits the length (I think Yahoo Mail did that, but I am not sure, I just filled the field with random stuff and forgot it).

The idea that there is no further use for it than to deorbit garbage is crazy.

Why? That is exactly what it was designed for. It carries supplies to the ISS, then is a bit of storage/extension to the space station and uses its fuel to lift the ISS so it doesn't fall out of orbit. When the surplus fuel is burnt, it is loaded with garbage, does two deorbit burns and enters the atmosphere. And then provides a spectacular light show.

Of what use would a space craft without fuel and loaded with garbage be to anybody? As all the things it does have to be done, I don't see where the problem is. Leaving it in orbit would just be creating dangerous space debris, so that is no option. The changes needed to make it reusable would seriously drive the price up, would have the issues the space shuttle shows (wear on material, high cost of maintenance) and would limit the loading capabilities. So to repeat, it does exactly what it was designed to do.