In some situations, you may automatically begin following pages, such as after you leave a post on someone's Message Wall. You can manage your preferences for automatically following pages in your user preferences.
You can view your followed pages on a specific wikia by going to Special:Following on that wikia.
To unfollow a page, simply click the "Following" link in the toolbar at the bottom of the page. This is the same location as the link you clicked to follow the page originally.
You may be displaying a "Pages I'm Following" box on your user page to show others what pages you are interested in on the wikia. This only includes article pages. If you prefer not to display your followed pages, you can disable this in your user preferences (under Advanced display options).
Special:Watchlist, which lists your followed pages according to the date they were last edited.