Bitcoin proponents claim that due to the lack of intermediaries on the blockchain the cryptocurrency economy is frictionless. That’s not so, argue researchers of the Federal Reserve Bank of New York.
http://www.coinfox.info/news/5183-new-york-fed-analysts-bitcoin-is-not-frictionless
That is daft. The article looks at fees at exchanges and considers this as friction. Is this friction due to fiat or bitcoin?
When people look at bitcoin transfers (in lieu of goods/services), rather than exchanging bitcoin for fiat, they will realize that this 'friction' more or less disappears.
However, this does not happen, although BTC-E exchange shows a constantly lower price for bitcoin than Bitstamp or Bitfinex (the average difference is about 2% of the BTC-E price). The reason why making money on this difference is impossible is that all the three exchanges charge considerable fees for transactions and for depositing/withdrawing of traditional fiat currencies.