mantype3 said:Forget about attacking the blockchain, what about controlling its price through owning a large amount of them? If some of the early people still hold large amounts of those 6 mil BTC they could use it as leverage to influence it, speculate, etc. I myself am no economist so i don't know how this could work but it seems vulnerable in that respect.
If someone owns a large number of bitcoins, of course they can influence its price. But at least it will be done honestly because they must use real bitcoins to do that. Bitcoins cannot be printed out of thin air unlike what is being done for many years with gold and stocks.
mantype3 said:Also, some hackers are supposedly using the coin as stock for speculation, by DDoS'ing exchange sites, forcing the bitcoin to drop in value, then buying, relaxing the attack, and then selling at a higher price. This instantaneous significant fluctuations could probably hurt Bitcoin popularity, and thus, its acceptance, IMO.
DDoS (Distributed Denial of Service attacks) has nothing to do with bitcoin's exchange price.
mantype3 said:Another issue is the way to protect your money is different in the case of Bitcoin. People have to be at least moderately tech savvy to correctly protect their own wallets from hackers...
Not really different. If your computer is compromised by hackers, your Internet banking, Paypal, etc. will be compromised as well as Bitcoin.
What is true is that it is still not very user-friendly to use Bitcoin. That's the problem with any new technology. It should be resolved as the technology becomes more mature and popular.