Software Definition For Weblog

This article about how to use a wordpress blog as a content managment system has a good definition that sums up the blog software. From Weblog to CMS with WordPress:

For those who have been living on a different planet, a weblog (or blog) is an online diary that contains a series of posts displayed in date order (newest first). In addition, blogging software usually provides an archive mechanism for filing away old posts, permalinks (human-readable URLs for each post), some means of classifying posts, a search engine, RSS feeds, and other goodies. However, the key factor is ease of use for web novices: allowing the creation of web pages using a WYSIWYG editor and without requiring any knowledge of HTML, CSS, FTP, or other acronyms.