I've recently started peppering my journal posts with bold type.

Rest assured, I'm not doing this because I'm going mad, or trying to draw attention to myself. What happened was that I went back to one of my older, long journal entries and discovered that I didn't want to read it. It was all this dense text, and reading dense text on a computer screen is difficult. In 1997, Jakob Neilsen wrote that 79% of web users do not read web content, they scan it. By making one or two important phrases in each paragraph bold, people scanning the text have some idea what I'm saying, and can decide whether they want to read it in depth.