Wordpress is an effective blog script. You can extend it with a huge amount of plugin and themes to build with a powerful seo site.
I agree with most people here that wordpress is the best blog script. It's more secure, fast and as someone else mentioned; It has better SEO. IMO: Joomla is a pain to use.
In my humble opinion the best is WordPress (WordPress.org), but as the previous poster stated that is all depending on your needs and preferences. The above mentioned script is the best for what I use, but that doesn't mean it will be the best for you.
wordpress is your first choice if you just want to build a blog, whether joomla suit for cms of organization
I think WordPress is the best because WordPress uses the most popular and the most effective spam blockers, Askimet. It’s powerful and effective, so you have no stress about being bugged by spam comments.It is very high in effectiveness as it’s been measured in saving over the thousands of spam comments every day on WordPress blogs.
I think joomla may be the best platform because - One less component/script to keep updated Then again, you have the comments and tag extensions to keep updated It's easy
My vote for Joomla is best for blogging and it has good content management system for our web content.
WordPress became very popular in the bloggers world, as it has all the features to efficiently run your blog website. Moreover, in most cases WordPress is coming with the hosting plan or you can get special "WordPress Hosting" offering you the opportunity to get ready-made, preinstalled blog site with the theme by your choice, so you don't have to worry how to setup it on the server, apply themes, etc. More info could be found here.