Notifications
Explanation
The Notifications Application keeps you informed of what happens on the wiki, through channels you can use independently of each other: the notifications menu inside the wiki, mail, and RSS feeds.
That menu is the bell in the top bar, provided by the Alerts Application. Its badge counts the notifications you have not read yet, and reads "20+" past twenty.
Which events reach you, and whether they reach you in the wiki or by mail, is yours to decide: see Change the Notification Settings.
To follow the same events from outside the wiki, Subscribe to the Notifications RSS Feed. RSS Feeds lists the other feeds a wiki offers.
Other ways of being notified come from separate applications. The Share Page Application sends a page by mail to another user of the wiki or to any email address. The User Mentions Application notifies you when somebody mentions you in a page, a comment, or any field supporting XWiki syntax. The What's New Application tells you about news regarding XWiki itself.
FAQ
Why is my notifications menu empty?
Usually because no event type is enabled for you, or because you are not watching any page, space or wiki yet. Both are needed before an event reaches you. Change the Notification Settings.
More
To find more about the current topic, you can search or use the table below and filter the columns to narrow your choices.