Spending a few months as a blogger has fundamentally altered my initial opinion of the nature of the web log. Blogging is social. Bloggers read and reflect and write. Bloggers establish an identity.
Blogging is a conversation.  An individual weblog typically has a single author; however, a typical blog entry will contain one or more links.  It is through these links and their associated commentary that the conversation takes place.  A few standard elements of a blog contribute to this social nature:
– Comments:  The comment form enables direct feedback.  Any reader can comment on a blog entry, participating in the conversation without necessarily being a fellow blogger.
– Trackback:  This allows readers to follow links to other blogs that mention a particular entry on this one.  Not all blogs have this.  It may even be specific to Moveable Type blogs (which is the software behind this particular blog).
– Links:  Most web logs have a list of links on the right or left margin.  These links often point to other web logs.
– Web Stats: more a standard part of a site, than a standard part of a blog.  Some hosted blog sites don