I received a few emails and comments both in my blog and on my FB wall regarding Yongnam and Marco Polo Marine. In the wake of their dismal results, some are wondering if they should stay invested. Of course, I won't tell people what they should do but I can share with them how I manage my portfolio so that I do not lose sleep over it. Regular readers and attendees of InvestX Congress a couple of months ago might remember the graphic of a pyramid which I shared. In case you do not remember, it is found in this blog post: Motivations and methods in investing. Many know that I invest primarily for income and these investments form part of the wider base of the pyramid. It is about investing for a predictable and, ideally, sustainable flow of income. Such investments provide my portfolio with a measure of stability that I desire......