Although there are pitfalls with Bond ETFs, I have found them to be quite useful unto themselves in a portfolio that is appropriately proportioned for individual circumstances. When used in conjunction with ETFs specializing in preferred shares, a satisfactory mix can be achieved in this rugged investment climate, at least for now. And, an attractive blended yield is captured with diversification.
How Safe are Bond ETFs? [View article]
One area I have not touched: muni's.