alt or alt.
Usually seen with a dot after it, as "alt." (pronounced: alt-dot) this refers to a large variety of newsgroups that discuss "alternative" topics. Some ISPs require users to sign an agreement stating they are "over 18" before access to the alt.newsgroups is provided. For a list of all of the alt.newsgroups, click on "more info" below!
NetLingo Classification: Online Jargon