"Literature is my Utopia. Here I am not disenfranchised. No barrier of the senses shuts me out from the sweet, gracious discourses of my book friends. They talk to me without embarrassment or awkwardness.
...includes "new media exposure" in its header-description, so that one would be the most appropriate, but people have sometimes posted such things in Chit-Chat as well (and/or in the language-specific forums if the article was in a language other than English).
That may not help with your search - the forum-search is a bit fussy, and can leave out hits due to differences in spacing or punctuation from the search-string, among other things.
You could go ahead and post the reference yourself, with a note that it may have been mentioned before. After 4 years I don't think anyone would mind another mention!