I am a huge fan of WordPress (self-hosted). The new 2.7 version makes blogging so easy. I love how it handles uploading photos, automatically installing plugins and tag management. My only complaint right now is that I wish I could control all of my blogs with a central dashboard.
If your original question was referring to using WordPress.com, I would suggest that no blogger use this hosted version of WordPress. The WordPress.com terms and conditions do not allow you to use the site for commercial purposes. While you might not want to sell advertising on your blog, it is a mistake to preclude yourself from doing this in the future.
If you have any questions about WordPress or blogging, please don't hesitate to ask me. I have been blogging for about two years now.
I have had my site up for about a year now http://numismaticblog.com and i have been getting steady but low flow.
I really need an objective opinion of my site some honest feedback. If you have the time an honest critique would be appreciated.