What is a Blog?
A blog may be comprised of news, commentary, diary-like passages or some combination of all three, but the defining characteristic of a blog is always chronological order. Whenever a writer creates a new post, it appears on the page directly above the last post. This allows visitors to read the most recent happenings first and scroll down to as many later entries as they like.
Inner Workings
Bloggers begin their work by logging in to a content manager system. This is the inner workings of the blog, where the writer can create new posts, edit old ones, manage user comments and set up the blog's look and feel. Blogging tools such as Wordpress and Blogger have slightly different systems, but their main functions are the same, allowing writers to manage their blog through an online interface. While Wordpress's software can be hosted on any website, both services provide web hosting for bloggers who need it.
Writing and Tagging Posts
Most blogs focus on one subject or a range of topics, so it helps to tag or categorize each post for future reference. For example, a political blog might write several posts on polling issues. Tagging a post as "polling" will allow readers--and the blogger--to quickly look up all posts about polling by clicking a link on the blog's main page.
The one exception to the chronological nature of blogs is the option to write a post that is permanently linked on the main page of the blog. This is particularly useful for dedicated information pages about the blog or its writer.
Community Interaction
One key feature of blogs is the ability for readers to publish their own reactions directly underneath the blogger's original post. Bloggers can control how this process works: A reader may need to supply a valid email address or register an account with the blog to comment. In some cases, the blogger must approve comments before they appear on the site.
Expanding Readership
"Trackbacks" are a way for one blog to expand readership. Usually, when one blog's post references another blog through a link, the linked blog is automatically notified, and sometimes the mention is displayed on that blog's page in the form of a comment.
Another way to connect with another blog is to link with it permanently in a section of the main page called the "Blogroll." Like a trackback, the linked blog is typically notified of this through a Content Manager System.
To rapidly expand readership is to get attention from a major blog or website, or from a content aggregator such as Digg. Because these sites have such a large readership, many blogs clamor for this kind of attention, so getting it is difficult.
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