[pietrod]

totally trash, an average people can check real influence of that "futures" thing by himself here: http://cfe.cboe.com/cfe-products/xbt-cboe-bitcoin-futures there is actually more volume in cash on localbitcoin in a rural village in India in an hour than there in a whole day...

ps, also to short something you need to borrow the asset and pay for the time of the borrowing, this is bitcoin is really difficult, because pricing can be really high, holding means covering you from the risk of losing next "bubble", if you lose that for a miserable 1%/day you are losing all the point of that asset basically, so these things can happens only in the naive minds of wall street traders than don't have a real model for bitcoin yet, but just go on bitfinex and see by yourself if it's good to you to borrow bitcoin to people who want to short, as i say before, everything in this space can be checked, this old people with they old analysis are just extremely boring and meaningless.

[csomar]

Shorting futures doesn't require borrowing bitcoin. You usually also get paid on it (though recently the market has been on backwardation, so you pay). But the cost is kind of upfront.