how about  e-currency?
do the ranking of  e-currency can believe?
i do not it can believe all, in the ranking btc is the last!

regulate digital money is difficult and i think the market is the best tool, people will buy good projects and sell  scam projects coins.

If miner stop mining then he bc net will go down and btc will die! As all known miner not only mining new bitcoins but also confirming the transactions too.
If there is no miner, then people can not transfer btc then btc die.

I believe that bitcoin is definitely a future money.
But the price of btc also as stock,it will be up and down.  so if u believe it just holding it.  

 if you forget your key of the bitcoin wallet, u lost your btc and of cause lost the money.
but u can use some software to help u find your passwords because u should remember some feature of your passwords and this make the it not too difficult.

 Actually I do not care about bad news about bitcoin, because have many times many people say btc is bubble, but btc price slow rise! Although bitcoin may affect alt coin, we have a lot of choices. The blockchain is an example and much more. So do not worry too much about it

i think just because  last year the price of btc up too many and its nature many invest sell out btc to get big profits to package!
this is the markets! up and down and then up and down!

i not prefer u buy account from net!
because it is unsafe.
u do not get their all register files such as phone number, email, after u buy, they can get back their account by phone number and email!

01. Most Painful  ?
I invest a projects and join its' ICO, but after the end of  ico, the dev team disappear and lost all  my invest !
02. Happiest 

i bougth strait and holding about 3 month and get about 50 times profits!

wow,great news! now more and more big companies join the blockchain and this will promotion the blockchain technology!

thanks for your remind. now there are so may ICOs, it is dangerous and many ico just for money and the dev team do not want develop the projects.
so be careful study before invest any ico

does  amazon Accept Bitcoin now? from your news about one years !

one just can know the number of the address which holding btc,but cannot know the number of actual users because one person may own many btc addresses.

Wow that's great news, it means then that bitcoin does really have a place in the economical aspect.
if the price of btc continue up in the future, it's rank will up too, can it reach the first place? hope so!

wow, 800days, it is too long, if really i think most the investor have left the cry markets.

I think the govermnet cannot trace u have btc if u just got it from face to face trade.
other wise the goverment can trace u very easy.
u trade in exchanges, now most exchanges require authorize!

This is true, especially for many air coins, they have noting just copy some good coins code and modify few code,then claim to cheat money!   But also have many good coins their price will increase steady such as btc, eth, ae.

maybe the price of btc will drop a little more in the following days, but i believe it cannot drop too many. now is good time to buy it. but not invest all your funds a time, leave some money to buy if the price keep dropping.

the price again drop around the 2200sats, it is time to buy some?

such huge supply, i think it is not worth 1 sat, in some exchanges, have dog echange pairs and it can trade below 1 sat!