I wonder why doubler is still alive and still kicking, are their investors of these kinds of projects, are people do not use their common sense that doubler is an illogical way to invest because they are not and cannot be sustainable in a long haul, people are perished because of their greed and being unethical.
Because there where still fools that do believe on making easy money which makes these doublers to continue to exist even nowadays.I thought people already learned up lessons back in the past but it seems the cycle continues yet they do still exist as of today.
Giving out 2x with your capital without any basis on where they do get those funds? With that alone reason you can really think of that this is a total crap way of scamming people.
And it looks like it's going to take sometime before we see the last of these doublers, doubler has been in existence even without the existence of Bitcoin, there are so many of these in the past and they are using a payment processor called Liberty reserves where you ask for a chargeback, and since Bitcoin has no chargeback they are very active.
lol! do anyone need to spell it out for you, this is every indication of scam, there is no point making inquiry about it, any site who is promising to double amount without any proper sources of generating this revenue is likely a scammer, better to be safe than sorry. 
