@KeyserSoze,
I have promised to keep my negative views to myself in this forum, but you insist asking for them...
Is what I wrote on twitter and put on my homepage any different from what I already wrote here?
(You missed my last tweet, "One day bitcoins will be worth their weight in gold".)
Even if bitcoin ultmately succeeds (which I wish it will, but doubt it) and bitcoins becomes extremely valuable (which I very much doubt they will), bitcoin trading is ultimately a zero-sum game. Any profit that one makes from it is someone else's loss. In order for @Goat (or someone else) to buy his Lamborghini, @windjc (or someone else) must lose his house.
I believe that adults have the right to gamble their money and property any way they want. They even have the right to play at this crazy roulette-by-phone where the casinos may not have money to pay off, and the dealers are know to be liars, cheaters, and thieves.
So I have no objections to bitcoin trade and speculation --- as long as the people who come into the game are aware that it is a form of gambling, and that their expected profit is slightly negative (because of fees and other losses).
However, this particular game will be profitable for its current players only if the price goes up; and that is not likely to happen if the "market" consists of the same guys trading the same bitcoins and the same dollars back and forth among themselves. In order for the price to go up, and the old players to make substantial profits, new players must come in and bring new money.
So, in that aspect bitcoin trading is indeed a classical Ponzi schema: the money invested by new members is used to pay the large profits of the early joiners -- if these are smart enough cash out while the price is higher than what they paid for their coins. The net effect of the game is to shift money from the late entrant' pockets to those of the early entrants.
And that is when the game stops being OK. That is because in order to lure new players, some of the bitcoin "evangelists" are resorting to plain lies, painting bitcoin as a "good investment", an hedge against "rampaging inflation", etc. They keep showing that false arithmetic of total e-commerce divided by 21 million. Some still claim that bitcoin payments are untraceable and un-seizeable. (You may have seen my tweets a couple of weeks ago where I argue with someone who claimed just that.) And the bitcoin salesmen conveniently forget to mention the growing legal barriers, the dozens of exchange failures that ate millions from their clients, and the many other things that would turn sensible people, even uneducated ones, away from the bitcoin game.
One feature of Ponzi schemes is that most people who join feel the urge to become salesmen and convince others to join too. You do not see long-term stock investors doing that; that's because those people know that other smart investors will look at what the company does, and will not be impressed by sales hype.
It was the opening of the Chinese market that lifted the bitcoin price from the low tens to 1200, and it is the Chinese who are holding it at the present levels. But that market is no longer growing. So, where will the necessary new suckers come from?
I have seen people here and elsewhere saying that the only hope left now is Latin America. Well, I cannot sit and watch fellow countrymen being conned, can I?
Several times I felt the urge to end my posts here with a friendly "I wish you all get filthy rich". But I cannot honestly say that: if some of you do, others necessarily will become filthy poor. I thought of writing "may you all get back most of what you invested", which is the fairest outcome one could wish for in a zero-sum game. But I cannot honestly even wish you that, because many people have already walked out of this game with millions of profits or stolen money --- so you all are, like those guys in my parable above, spinning around only a fraction of the money that you all put in. Sorry, folks.
So you didn't notice that bitcoin is money? Or do you not understand how money works?