Today, I was flabbergasted to receive a call on my cellphone! In US, I pay for incoming calls. Now I am worried that I am going to be swamped with these stupid calls. I just can’t understand how this stupid company expects me to ever even use their service when they’ve so annoyed me with their spamming. Some stupid jerks seem to be running this organization

http://blogoscoped.com/archive/2008-08-05-n83.html
http://googlesystem.blogspot.com/2008/08/google-page-creator-to-be-closed.html

With Google Page Creator you could upload HTML files and use CSS files (or CSS in HTML) to make your pages look exactly the way you want, but with Google Sites you can only use templates that suck. Also, scripting is disabled in Google Sites.

You are talking about recursive simulations.
But in order to run a simulation you need memory and processor.
Say, the first universe is real and some mighty creatures develop in it, so they will build a computer to run simulation of another (sub-)universe.

A computer, where this simulation will run is a part of the first (real) universe. It means that the number of degrees of freedom (or number of possible states) of this computer is significantly less, that number of degrees of freedom of the first universe.

So the second (simulated) universe will be much simpler than the first one.

And if the second universe will simulate the third, this one will be much simpler, than the second.

Obviously this process (of decreasing the complexity of recursive universes) develops very fast, i.e. at some stage one of the simulated universes will be unable to simulate anything.

This is exactly the same as running virtual machines on real computers. There is a program called VMware, which creates and runs virtual machines on Microsoft Windows and Linux. And it can be used recursively. But all these recursive virtual machines run on the same REAL CPU and in the same REAL memory. OK, the CPU speed is not important, as you can always say that you have infinite time. Even if our earth and life on it is a computer simulation on some tremendously slow computer - we cannot be aware of it.

But the REAL memory, which is used for all these recursive simulations will become less and less (exponentially from one recursive simulation to the next one), so for some of the recursive universes the amount of memory will be so small, that this universe will be primitive!

And by the way, I am sure that for VMware tool it is possible to write a computer program, which can detect if you are running on a simulated operating system or on a real one.

Perhaps, it is possible to invent a physical experiment that would reveal if our universe is simulated or not.

One problem of computers seems insuperable: bugs. Bugs can cause memory errors. Also computers use multi-tasking, and synchronization errors occur.

We are unaware of the power of mighty creators who could build a computer which simulates our universe. But every computer program developed by human programmers (if it is complex enough) contains bugs.

And a good hacker would reveal bugs of any program. Of course we can presume that the program simulating our universe is very simple, trivial. It could be. But if it is complex enough, it must have bugs.

So let’s try to think of an experiment that would reveal bugs in this program. If we find at least one bug - we will prove, that we are simulated.