Nobody lost his bitcoins or his KHS but it's if these things get published then you need to start paying attention to the website a bit more.
There is always but ALWAYS a possibility that they will scam you and you will never see your invested bitcoins again.
I once had this with the cloudmining website Hashprofit. Luckely I didn't lost a lot of bitcoins!
I know that testing new websites and programs is always a risk to lose the amount that I invest in them.
SCRYPT.CC is back up and if you want to try it out then don't invest a lot of money in it. Just wait a few months to see how it goes.