That ‘O’ in the upper right of this post-box stands for ‘other’. I think sometime today I will implement a function to make those letters link to a filtered version of the page. Clicking on ‘O’ would show only posts in the ‘other’ category. The idea is that people with different interests can come to my site and get only the information they want. Of course this all assumes that people are interested in what I have to say/write/create.