Becareful on ponzi and so called investment sites, most time you never get returns as they fail so soon. I guesd trading is advisable if you know the twist and turns. Never been easy!
What can you risk with my U2cloudmining investment system?
All is free now...and people are paid.
if you do not trust you can get your 10000 satoshi in few days.(do not forget to claim the free shares worth 2000 satoshi for free too)
10000 satoshi is not investing, 10000 satoshi is a faucet. A faucet is like a very boring job that does not pay much.
Faucet cant give big bro! I will invest in the bitcoin, just because the halving is coming. Although the bitcoin is unpredictable, I have faith in the bitcoin and his future.
remember that 10k satoshi are so far a transaction fee!
so you can earn also 10k satoshi but

it's impossible to spend! It's an amount too small!
Every time I read "cloud mining"

I get scared.... why there isn't any activity of such mining

?!?
Just because they are only ponzi scheme! Don't trust (NEVER) this type of site!!!!
Even faucets pay more then that, atleast from faucets you can claim enough btc to send them to your wallet for once, but the site that guy has mentioned where you can get 10k satoshi in few days is just dust giving site but nothing else.
People out there are bored of such websites and they don't often use them, maybe there are some people having too much extra time and use those websites, but i never see one.