Because until recently, there wasn't much in the way of payment processing on that kind of scale.  Bitpay can handle now.  Expect to see Valve accepting BTC soon.

One such step has been to appoint Valve's economist Yanis Varoufakis to position of Finance Minister of Greece. For the past three years Varoufakis has been working at Steam to analyze and improve the Steam Market but now has the opportunity to improve one of the most troubled economies in the world.

Central banks everywhere should be sure to own everything that is happening now:

http://www.zerohedge.com/news/2015-01-27/bonds-third-largest-austrian-bank-are-crashing

what are people's thoughts on mining difficulty futures contracts bound to difficulty changes as innate "oracles"?

I have a hunch it may be useful, but it's a difficult subject on why, when and who would bed on difficult going down.

I find the subconscious suggestion in this statement interesting.

Another thing about the latest research on the 1 percent from Rank and Hirschl: While one in eight Americans might visit the 1 percent for a year, only one in a hundred stay there for a decade or more.

There will be a raft of good news coming out of the USA as the VC investments of 2013/4 start coming online.

I doubt staying in USD is the best strategy when the price will be trending up.

PayPal have pretty much laid down the path of travel. They will be enabling Bitcoin globally.  Actually, everyone apart from Apple will be offering non-credit card competition via Bitcoin in the coming year or two.

The direction of travel is mostly going to be north, with the odd attempt to short for short term profits.

True enough. I'm in a similar position. The only reason I'm margin short right now is so that I'll have the ability to buy more when and if it  drops, but that means no sleep tonight. No fucking way I'm sleeping margin short. There could easily be surprises in either direction, but the downside looks much more likely.

ya,that's so true.
However, with the high inflation rate of bitcoin.
Dogecoin, litecoin or others are in the market,
so next question such as what is the different of cryto-currency with currency nowadays
when the price is high and another new cryto-currency is created?

China wakes up in 3

Edit, it's actually 530am now

That is pretty bad taste, even for you.

There's still a lot of stolen coins that needs to be sold. I expect huge volatility for awhile until exchanges get their security holes fixed.

I bought some in the past few months, but i know I will regret not going all in. I am in some ways hoping for another dip... but deep down i know it isn't coming.

Think of this, Bitcoin has had an insane run up with only geeks and nut cases buying in. We have yet to see a bubble with mainstream society. When it happens..... holy shit..... 

Sorry, I could not get beyond that.  However,  I found a formula (attributed to Euler) for sin(x) as an infinite product

sin(\pi z) = \pi z \prod_{n=1}^\oo (1 - \frac{z^2}{n^2})

It looks similar enough to your function shifted and scaled as before

f(\pi (z + 1/2)) = A g(z)

where z = x/\pi - 1/2,

A = \prod_{m=1}^\oo \frac{(4m-1)^2}{4m(4m-2)}

and

g(z) = \prod_{m=1}^\oo (1 - \frac{4z^2}{(4m-1)^2})

Maybe you can get some inspiration out of it...

Money isn't going to come overnight. I do expect this pull back again, but with news like this, I do wonder if its time to stop worrying about making profits on trades and just hoarding.