English Wikipedia
As the English Wikipedia is very popular, there can be many people editing the Wiki in one minute.  This made recent changes less effective for understanding changes.  Instead, editors can select and watch for changes in particular articles, using the "watchlist" feature of MediaWiki.  Both watchlist and recent changes can be filtered to show particular kinds of edits, such as edits from IP addresses or edits that may possibly be vandalism.  Some editors use special software to detect and fix vandalism.