It's part blog, part personal wiki. Some people would call it a "bliki".  
1) Myself. To some extent, I treat this as my personal bookmarks folder, as a mind map.
2) Search engines, and people who visit because of search engines. While most pages on this site are unpolished, there are a few that are highly polished and deserving of broader attention. The "recent changes" style of the frontpage is good for Google juice. A lot of random visitors wash up on these shores, look at one page, and leave.
3) There are a few individuals who are interested enough to check back periodically, using it as something like Facebook or Twitter, as a way to keep up on what I'm doing at the moment.
I have broad and capricious interests. I'm a competent woman, an autodidact, a dilettante.
I'm an engineer. My career is in software engineering, so content skews heavily in that direction. I dabble in structural/mechanical engineering and safety engineering.
I've long been a proponent of hard science and empiricism. But recently I've grown more interested in social sciences — psychology, linguistics, semiotics, queer theory, geopolitics, and history. My favorite book is "Guns, Germs, and Steel" because it is wide-ranging and cross-disciplinary.
Directory pages might look a little unfriendly. The default sort order is most-recently-modified at the top. You can sort by name instead, by clicking on the "name" heading.
Also, I prefer "bare metal" tools. I want to use the traditional grep/xargs/find toolset to manage my content.