The problem is at some countries bitcoin is already accepted ,at Brasil the most things we can pay is to pay developers to make some projects,there isnt yet some website offering a computer for bitcoin a cellphone,a tv or a bike even there is no travel agency accepting it ,isnt very knowed at the moment,soo this make some of us hold it waiting a better value,in my case i keep growing my portfolio.And well is hard to trust others online shops that accept bitcoin since there isnt any way to recover the money sent ,soo can be easy scammed,by the way which worlwide site you talking about?
My friend in Brasil told me its not really possible for BTC trade to flourish there because there is a massive 20% tax on any sale of BTC i believe. That means he has to get a US account and deal remotely with US exchanges.
Otherwise 20% on any transfer of BTC/FIAT is completely absurd.
As you stated above at Brazil they charge deeply ,for anything that come out of the country,usually the taxes are 50% ,but im sure there is some users that dont pay those fee they are registed and sell and buy directly wire transfer,i bought some bitcoins on this way with a member from here.The problem here happens when you got huge ammount of bitcoins and wanna to convert into fiat at once,they will be taxed ,strategy is to sell small ammounts in while a while,this will avoid those huge fee.Isnt the time to left any job to go full into bitcoin,but if the value of bitcoin gets double well sure it can became.