University Blog Service- free Wordpress sites for current UT staff, faculty, and students
Wordpress.com- Pre-installed and hosted wordpress sites. Has free and paid versions.
Wordpress.org- open source version of Wordpress, you provide your own hosting
Tumblr.com- not as high powered or customizable as Wordpress, but has a shorter learning curve, example: http://utlsocialjustice.tumblr.com/
GitHub Pages- more of a learning curve (you need to learn GitHub and basic HTML), but a free, highly customizable option for creating websites
Google Sites- Create quick, simple webpages.
Wix- Create a free website or upgrade to a paid plan to customize your domain and remove ads.