If you own a domain name and a website, aboutus.org is another good wiki to advertise yourself.
Aboutus will read informations from your domain registrar and your website, generate automatically entries about your domain identity.
You just type http://aboutus.org/your-domain-name/, and be the first peroson to privide all the informations about your business and domain name.
Here is two examples:
By the way, you can search Wikipedia for a relative entry, and add your blog into the external link, this will help people to find you.