What do you think of 1) Blackcoin (look at
this chart on the three month lenght or else
on mintpal) and 2) the poster's summary? Do you thing, to related with your answer, that Blackcoin is one of those "things that can go really high."?
I don't know what is blackcoin so that I could have an opinion on it.
It is obviously one of those things that "can go really high". Real estate and gold are examples of things that cannot, I meant that you should not buy them with an intention to cash out your original investment, rather they are to be accumulated and never sold. Also stocks I don't recommend the method because you cut your winnings and let the losers run, the opposite of what is prudent.
The spirit of my plan is also that you start selling only after bitcoin/whatevercoin has become a significant part of your portfolio. Then periodic selling also satisfies the Kelly criterion.
EDIT: Blackcoin resembles Quark in that it is practically premined and its price can be decided by the preminers. Quark made the preminers rich when the premine ended and pump began, but it has been going down since taking the sheep with it.
Don't buy blackcoin.