That actually makes the actions of a serious predatory trader even more dangerous, since the total pool of available bitcoins is smaller due to the number of people just sitting on their bitcoins. In fact, it could be worse, especially if the trader causes the market to drop, which could make the investors bail out of the market, lowering the price of bitcoins even further. The trader then buys up the bitcoins for a song and a dance.
Now, if people weren't hoarding bitcoins, it would be much less of a problem. If the majority of the currency was liquid and actually flowing, it's much harder to corner the market on it.
Re: 2:
This isn't necessarily HFT-specific. HFT is constrained by a lot of rules-both regulatory and exchange-specific-that attempt to stop this kind of damage(for example, NASDAQ has the right to void any trade chain that takes place if they deem it necessary), as well as a massive amount of competition from other players in the market. With Bitcoins, there aren't any of these rules, either on the exchange level or regulatory. There is not anything to stop a trader, either using HFT algorithms or just manually executing the trades, from applying these techniques.
That actually makes the actions of a serious predatory trader even more dangerous, since the total pool of available bitcoins is smaller due to the number of people just sitting on their bitcoins. In fact, it could be worse, especially if the trader causes the market to drop, which could make the investors bail out of the market, lowering the price of bitcoins even further. The trader then buys up the bitcoins for a song and a dance.
Now, if people weren't hoarding bitcoins, it would be much less of a problem. If the majority of the currency was liquid and actually flowing, it's much harder to corner the market on it.
Re: 2:
This isn't necessarily HFT-specific. HFT is constrained by a lot of rules-both regulatory and exchange-specific-that attempt to stop this kind of damage(for example, NASDAQ has the right to void any trade chain that takes place if they deem it necessary), as well as a massive amount of competition from other players in the market. With Bitcoins, there aren't any of these rules, either on the exchange level or regulatory. There is not anything to stop a trader, either using HFT algorithms or just manually executing the trades, from applying these techniques.