You can watch edits, comments, or tags of a specific Article by clicking the Watch this article link (changes to You are watching this article if you are already watching it - see red box below):
The form lets you can choose what kind of you want to watch, and how you'd like to be notified (typical choices are email or a Jabber IM message).
Similarly
The Person tab lets you watch new articles, comments, edits or tag changes of the person who created this article
The Space tab lets you watch new articles, comments, edits, tag or attachment changes in the this article's TeamPage Space (Terminology note: TeamPage 5.0 replaced the term "Project" with "Space" in Jun 2010, see Customer2797)
The Tags tab lets you watch content marked with any of the same tags as this article.
