No brother, don't ever trust websites like these which claim to give you good return in a short span of time.
They basically want you to invest your amount in their site and will probably scam you by taking your money.
If at all you want to try out cloud mining or web mining whatever you call it, try out the sites in which you don't have to invest your money.
For instance, eobot has free cloud mining. You can try that out. But no cloud mining website will generate you any profitable income.