4) There is not such law as of "information conservation" Information can be easely destroyed. Kick a jigsaw for example, or crash a harddisk by dropping it on the floor for that matter.
AFAIK information cannot be destroyed. You can change its form, you can scatter it so it looks nonsensical to us, but the information is still there. In the case of dropping a harddisk, you can hardly say that the magnetic bits have vanished.
Next, when something falls into a black hole, its information is preserved. Assuming you knew
PRECISELY everything that had ever fallen into the black hole, and you were willing to wait a
VERY long time to observe
ALL information that the black hole gives out as it evaporates, then you could
THEORETICALLY reconstruct the object you lost to the black hole.
Shannon's theorems prove that information is equivalent to entropy. The entropy of the universe is continuously increasing, therefore so it the information contained in the universe. In the "heat death" scenario of the universe, in the far far
faaaar future (let's say, far enough away that bitcoin keys might be cracked [anyone wanna do the calculation to see which will happen first?]), the entire universe is a uniform cloud of individual, randomly placed, particles. Since a random signal contains maximal information, the entropy of the universe will at that point be maximal.
OP should look at the "Holographic Principal". To put it briefly, imagine a pile of computer memory chips. You can imagine adding more and more chips to the pile, increasing their density, and so forever increasing the density of information in the pile. Eventually, however, the pile will be so dense that it will collapse into a black hole, and the surface area of the black hole will be directly proportional to the amount of information in the pile. In a certain sense, all the information about everything that ever fell into the black hole is "written" on the surface. Now instead of a black hole, and consider the whole universe, and the inescapable conclusion is that we, and all our 3D universe, is actually a hologram, being equivalent to, and derivable from, information and laws governing the interaction of those quanta of information, all written somewhere, very far away, on the 2D surface enclosing the (observable) universe. Fascinating, eh? New Scientist had a great article describing it a few years ago, but it's paywalled.
Now, after that tangent, OP is confusing correlation for causation. Just 'cos transistors are getting smaller and using less mass, therefore decreasing the gravity due to a single bit of human-stored information, doesn't indicate that the lesser gravity is due to
information itself somehow requiring less 'gravity', but due to humans requiring less 'gravity' in order to encode information. Think, once upon a time you needed a 10kg stone to write 100 bytes or so (think Moses).
Finally, the amount of quantum information in the memory chip of your computer is
far far far more than the bytes of memory it contains. OP should read more of Shannon's theories of informational entropy. That's the theory you're looking for. The 'internet' is not creating information. It is merely storing information (very inefficiently, at that) that is already available, if only we could somehow understand it.
Whoops! 9 new posts since I started.