Self-Replicating Repairing Robots (http://www.forofriki.com)

Sweet!

magnet attraction

NanoTech was the first thing that came ot mind when I saw this. You guys watch movies like terminator? When The robot's armour gets a hole through it and it repairs itself? This is a Big model. When they actually integrate this into nanotech, We'l have really awesome armours.

cool but completely useless

with this... you culd buld bridges that could never fall! ... or the most popular toy of 2012

This is pretty cool stuff. Wonder what it can be used for though..

Everything. This is the future right here.  :)

lol, do you even know what your talkin about?

If you don't understand how important self-replication is to science and technology, that's your problem not mine. I'm not going spell it out for you if you're going to be rude. Do you even know what a nanotube is???

Oh, never mind. You're 14.

Okay, I'll explain it. Nanotubes are made of carbon atoms that are bent into long tube shapes and are very sturdy, so they're good to be used in construction of buildings among other things. Nanotubes are hard to make by ourselves, but a self-replicating molecule with a "universal computer" can be programmed to make other molecules which can make the tubes atom by atom.

You could use molecular "robots" to make complicated molecules that can fight diseases too.