Those are nice articles, but please, stop posting those links in here because it is pretty obvious that you want to increase the traffic of your site.
Or at least, quote what is in there and post it in here to avoid the spam.
Cryptocurrencies ensure that transfer of funds between business or people is safe and exceedingly easy. Private and public keys are utilized to ensure transactions are safe and transference fee's for funds are kept at a minimum low. Block chains are online ledgers and people can transfer them through computers ensuring that others are honest. This makes transactions transparent since different people can verify them.
DISADVANTAGES,
-Cryptocurrencies are backed by computers and maths as opposed to other currencies that have precious metals to back the.
-There are no physical notes and coins to represent the currency and therefore no central repository making it hard to recover any balance in case of a system crash.
- Cryptocurrencies experience a lot of fluctuation and this can lead to the market being volatile meaning that a lot of money can be lost or gained within a short period.