Part of the reason behind the existence of these sites is --- I believe --- the hope that they will be useful to well-motivated people who want to learn some of this stuff themselves.
I don't think that algorithms are for "The Book". For example the four colour theorem is an example that looking algorithms that are good looking is not the correct way to go. Is better to be flexible, Greek were sad when they discovered irrational numbers but we now know that real numbers are a good thing to have.
