Nah. Bitcoin is too Communist for eBay.
Tell that to the libertarians here
It seems very capitalistic to me. As with any other currency, there's a small number of people with huge stashes ruining things for everyone else, such as by dirty tricks like dumping about 25000BTC onto a rising market last night, and manipulating the price with huge ask/bid walls.
Its not communist or capitalist - its just a currency. It is for sure a demon for Keynesianists, which usually label themselves as "left wing economists", as the ability to inflate the currency is a must for the Keynesianist "stimulus strategy" in crisis times, which is a central point of Keynesianism.
That said, a communist government would never accept a national currency they cannot fully control - on the contrary, libertarian capitalists or more generially austrian echonomy followers would embrace it with joy.
Anyhow, I can see anarchists/communists/anti-capitalists supporting Bitcoin just because is a "bank killer", and right now the financial elites are the ones ruling the world, so we could say that Bitcoin could turn upside down the current status quo, which might be a desiderable intermediate step for communists/anarchists/anti-capitalists in general. Bitcoin would never been the end goal for anti-capitalists, but it could be a first step to radically change the power balances in the world.