GitHub vs gitworkshop. Perhaps we can focus on which tools are good and why they are good rather than focusing on which people are "good".

Again, LOL Email - SMTP, IMAP,POP3 are protocols, just like Bitcoin is a protocl. Email is decentralized system. I can run my own email server, just like I can run my own Bitcoin Knots node. BGP routing is non-deterministic. Email is not centralized. Who do you ask for permission to setup your email? You need to learn a thing or two.