Author, A. (year, month day). Re: Title of post [Blog comment]. Retrieved from http://xxxxx
Because the author is only identifiable by a screen name, that name is used as the author in the reference.
Author, A. (year, month day). Re: Title of post [Blog comment]. Retrieved from http://xxxxx
AMO. (2014, June 14). RE: Seven lessons learned while being The Man [Blog comment]. Retrieved from http://librarianinblack.net/librarianinblack/lessons/#comment-82605
Author, A. (year, month day). Re: Title of discussion [Online forum comment]. Retrieved from Name of Website: http://xxxxx
When the location of the discussion is not clear from the URL, include the name of the site in the retrieval statement.
Author, A. (year, month day). Re: Title of discussion [Online forum comment]. Retrieved from Name of Website: http://xxxxx
Seaman,G. (2013, June 6). Re: The commentary text in this section concentrates entirely on copyright [Online forum comment]. Retrieved from World International Property Organization website: http://www.wipo.int/roller/comments/ipisforum/Weblog/theme_two_the_intellectual_property #comments