BlogFusion is a powerful, un-encrypted, easy to install, easy to use blog functionality. By far the most feature-filled CF blog application.

This easy, powerful, adaptable, thoroughly documented customtag lets you set up blogging on any ColdFusion server very easily. DB backend can be MySQL, Access, or SQLserver (only tested via ODBC, would probably need some mods to date-handling code for non ODBC driver). Integrates optionally with SoEditor wysiwyg editor. Can be used for neat stuff like collaborative blogs and shared events calendars. Separate tag (supplied) generates 'coming up' events listings. All this for only $75 per server (encrypted) or $150 per server (source). Demo version available for download. Hooks are built in for integration with your own content management and authentication systems. (By default ddBloglet uses a simple password system for blog owner log-in).