Most if not all HYIPs are scams. It's a matter who got in fast and who got in last. If you are looking at the best method to grow your coins, i would say just hold it tight. You won't see the numbers increasing but at least more important you don't see it decreasing as it will saps the morale when the numbers go down.
I think the majority of people "investing" in Bitcoin still think in terms of fiat, i.e. they buy bitcoins with a single intention to sell them later when the price starts to surge. In this way, if the price, despite their expectations, nevertheless goes down, their mood will follow it as well...
I don't know. Some of us invest on bitcoins and then don't even check price every day. I don't. Why? Because I don't really care, it's a long term thing.
I suspect you just didn't invest a large enough sum. A large enough sum here means the amount that you would care not to lose. Given that, my assumption (kind of opinion) should actually be read as a statement (kind of assertion), wtf...
