Questions to answer:
1. Where are remittances across borders included within the balance of payments? Are they current or financial account components?
2. Under what conditions—for example, for which countries currently—are remittances significant contributors to the economy and overall balance of payments?
3. Why is the cost of remittances the subject of such intense international scrutiny?
4. What potential do new digital currencies—cryptocurrencies like Bitcoin—have for cross-border remittances?
Please answer the question based on the material that I provide.