Thx, this was good! Concerning 1, I just did this post on handling ethereum based cryptos:

https://steemit.com/ethereum/@soveranger/proper-handling-of-ehtereum-post-purchase

Would you - or anyone I guess - mind having a look and answer where you can? I really don't want loose anything from improper post-purchase handling, so a reply from someone who knows the proper answers would be great. Thx.