I can understand someone wanting to collect and organize information on subjects of interest. However, my own site is unique.
Korean War Documentary: Site Contents
I, and many other "blog" sites, do this as an avocation. In my case, because I am one of the dwindling Korean War veterans and want to contribute an objective documentary to the newer generations, showing who we were, and what we did.
Since I get over 7,000 hits a day, this also does serve to express thoughts my generation has on more general topics, such as war protesters, the Haditha reportage, and a few others.