And do you think in a country where monthly income per capita is around $300 dollars, and then one family starts getting a payment from a family member working in Sweden for $550 a month through BTC exchanges instead of the $510 a month they were getting with Western Union, do you really think their neighbors are just going to ignore this and keep using Western Union?
How the hell would bitcoins be able to reduce those fees?
If you want to buy btc with kroners, you have to convert kroner to usd first (or euros), and then convert usd (or euros) into bitcoins.
You will get charged:
(1) by your bank for converting kroners.
(2) by mtgox for converting usd.
But, if you find a reliable way to convert kroner => btc and btc => usd, maybe you can save money.
But at which price? Too much of a hassle compared with the easiest way: international wire.
So, yes, it could save money, but not likely to be used by most of the world population.