Below is a big list of free blog hosts, where you can set up a subdomain or subdirectory with your username. Pick a subdomain with a keyword and start posting your links, simple as that and free.

++ Subdomains

++++ Various

http://spaces.msn.com/

http://www.blogeasy.com/

http://www.easyjournal.com/

http://www.vnunet.com/blogs/

http://multiply.com/

http://www.blog-city.com/bc/

http://www.blogharbor.com/

http://bloghi.com/

http://bloghorn.com/

http://www.blogspirit.com/

http://www.blogsource.com/

http://www.ebloggy.com/

http://www.pitas.com/

http://www.blogger.de/

++++ WordPress

http://www.blogsome.com/

http://weblogs.us/

http://www.wordpress.com

http://www.wpblogs.com/

http://www.blogthing.com/

http://globbo.org/

http://www.theblog.cc/

http://learnerblogs.org/

http://uniblogs.org/

http://edublogs.org

http://hrblogs.org/

http://beblogger.com/

http://www.evilsupergenius.net/

++++ Blogger

http://www.blogcafe.com/

http://www.blogspot.com

++++ Other

(These seem to belong in the same network)

http://www.weblogs.hu/

http://www.weblogs.cz/

http://www.blogs.ro/

http://www.weblogs.pl/

http://www.blogs.fi/

http://www.blogs.no/

http://www.blogs.dk/

http://www.blogs.se/

http://www.blog.com.es/

http://www.blog.de/

http://www.blog.com/

http://www.blog.co.uk/

http://www.blog.ca/

++ Subdirectories

http://members.freewebs.com/

http://www.livejournal.com/

http://www.20six.co.uk/

http://www.xanga.com/

http://www.aeonity.com/

http://www.bloggercrab.com/

http://www.upsaid.com/