Simply leave a comment with a link to your profile page (if you are a registered commenter, your comments probably already contain a link to your profile page) and a description (optional) of how you would like to be listed. You don't have to provide a reciprocal link from your blog(s), although it would be appreciated. I ask that your profile page not contain objectionable content. I reserve the right to reject any submissions, for any reason, including questionable content or links to questionable content.
I will use this format: first name, last name (screen name) as in John Smith (Big John). You may omit either your real name or screen name, if you wish. I may not list your screen name due to appropriateness or space considerations.
See also Why Profile Pages are Important.