You can think of Google as a way of brute forcing a two way world wide web - the way it was meant to be in the first place if Ted Nelson had had his way.
I have respect for Google as the orginal PageRank algorithm was a technical breakthrough in web search. Facebook on the other hand was just in the right place at the right time, with good marketing.
Interestingly another early investor was CIA, via its investment arm, In-Q-Tel. People will survey themselves these days! Another key Thiel company is Palantir Technologies.
Thiel is the subject of the documentary Nobody Speak, about freedom of the press and billionaires censoring of it.
6. Decentralisation: P2P, Blockchain and IPFS and Filecoin, Merkle Trees and DAT and Beaker.