An all-mailbag edition of Where the Money Is with Motley Fool analysts Matt Koppenheffer and David Hanson answering questions on bonds, Bitcoin, ETFs, and being on a deserted island with four big banks.

David Hanson owns shares of JPMorgan Chase. Matt Koppenheffer owns shares of Bank of America, Citigroup, and JPMorgan Chase. The Motley Fool recommends Bank of America and Wells Fargo. The Motley Fool owns shares of Bank of America, Citigroup, Google, JPMorgan Chase, and Wells Fargo. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.