You shouldn't invest in any of them but here are the concerns about cloudmining.website

1) recently purchased domain - I already stated except for being new
2) Rates cheaper than competitors (still not wise investment even if not a scam though) - This does not raise the concern of too good to be true. Because, only a few post back u xplained this rates might not break even either. I am rather chosing them for this rate as there is at least a chance to break even.
3) Only open for business publicly for 3 days - I already stated except for being new
4) Private whois - This is the same for others. I asked for points those are absent in PB mining, Cloud Hashing or Hashie.
5) Lack of known owners and contact information like phone number and address - This is the same for others. I asked for points those are absent in PB mining, Cloud Hashing or Hashie.