Bitcoin and Ethereum Fall Substantially in $18B Crypto Market Wipeout
finance.yahoo.com
finance.yahoo.com
There are a lot of signs pointing to a broad decline-- rate inversion, historical highs for P/E, etc.
IMHO, caution is warranted.
you can start from http://a16zcrypto.com
https://www.cnbc.com/2018/08/10/world-bank-picks-commonwealt...
Anonymous (micro-)payment for things online.
Decentralized cloud storage (Sia, Filecoin, Storj, MaidSafe).
I'm personally fond of the idea of federally controlled stablecoins.
On the flip side though, it enhances the possibility for scam sellers to never send products and steal money from buyers.