Subscriptions and Bookmarks
In phpBB 3.0, bookmarking topics worked much like bookmarking in a web browser. You were not alerted when there was an update. As of phpBB 3.1, bookmarking is more like subscribing to a topic. You can be notified when a bookmarked topic is updated. Subscribing, however, will notify you when there is an update to a topic or forum on the board. Notification options for bookmarks and subscriptions can be configured in the User Control Panel, under “Board preferences”.
You can bookmark or subscribe to a specific topic by clicking the appropriate link in the “Topic tools” menu, conveniently located near the top and bottom of a topic discussion.
Replying to a topic with the “Notify me when a reply is posted” option checked will also subscribe you to the topic.
To subscribe to a specific forum, click the “Subscribe forum” link, at the bottom of page, upon entering the forum.
To remove your subscriptions, go to your User Control Panel and follow the links to your subscriptions.