Virtual currencies such as bitcoins are seeing growing interest. Is it safe to trade with them? Here’s what investors and traders say

Will you trust a currency not issued by any government or backed by a central bank? Certainly not — that would be the most likely answer, you might think. But the fact is that there is growing interest in crypto currencies such as bitcoins that have no legal sanction. Without any regulatory approval, registration or authorisation, virtual currencies have been gaining popularity in many countries,...