Bitcoin is bought to sell it more expensively, and then again to buy cheaper, this so-called investment brings up to 20% per week. 
There are certainly risks, but then either losses or you need to wait
There are certainly risks, but then either losses or you need to wait
I think unprecedented? this is one of several ways to combat PayPal and Google wallet too! both based buyer and if someone mad at you and do reject pay your not only the loss of goods and your money, but they will also collect your extra to reject pay (it's like a $ 30 for Google and 25 for PayPal). because the concept of storage can save email from value exceeding of gold and do not have the risk of counter-party and most of the anonymous and the entire history of the transaction is public and transparent and storage take zero physical space it all