Blog Central?

The 3rd and 4th things (http://wiki.sla.org/display/23Things/Week+2+Blogging#Week2Blogging-Thing3and4%3ABloggingandRegistrationwithBlogCentral) are supposed to be Starting a Blog (check) and Registration with Blog Central.  I can’t find any information about what Blog Central is and how to register, so after looking around some, I guess I’ll leave Thing 4 undone and go on to Thing 5, whatever that is.  If anyone reads this (unlikely, since it’s not registered!) and knows how to register, leave me a comment and let me know!