Bitcoins are absolutely worthless. If there is any sign of a tech bubble, it is these worthless hashes that people pay hundreds of dollars for.
One of the genius aspects of the Bitcoin scam is the limited output and increasing difficulty as it goes on. This keeps the scam going longer. If it were like tulip bulbs, or subprime real estate, or pets.com type stocks, the bubble would eventually burst. With the types of bubbles we've seen, and the big names in tech willing to associate their names with this scam, keeping a Also keep in mind that the float is not all that high. Many bitcoins have never been traded, especially early ones. That 30k of Bitcoins are going on the market can tank the price so much shows how weak demand is for this worthless "currency".
One aspect of the pied pipers of this scam is that their theories of its value are not falsifiable. My theory is falsifiable - Bitcoins are going to go from a current market cap of over $7 billion to well below $1 billion. There theory is not falsifiable "it's valuable because it's valuable". So if it goes up they're right, if it goes down they're right.
Why are Bitcoins valuable? Anyone thinking of buying an ASIC or a Bitcoin should read from the Bitcoin boosters the answer to this question. There is no answer. Which is why Bitcoin is bound to crash.
It's possible a real online currency might happen. The Bitcoin scam is certainly postponing that day. When Bitcoin crashes, possibly with much legal involvement afterward, VCs will be very hesitant to fund an online currency for years to come.
To me the real currency would have to be something in the realm of Folding@home. I'm not sure how it would work of if its computationally feasible, but I do know people would pay for the results of useful computations such as that.
I would short Bitcoins if I could find a reliable party to do it with, and it were easier to do. That doing that is so difficult is another sign how it's not a real currency.
That this post and any post not buying into the Bitcoin hype is bound to be downvoted is yet another sign of the scam. I rarely have posts downvoted on HN, but any time I am slightly skeptical of Bitcoin's value, the Bitcoin hucksters pile on and downvote anyone questioning the scam into oblivion. It reminds me of how MLM people act on the Internet.