Feature summary (what you would like to be able to do and where):I'd like to propose a new feature where users can receive notifications when specific keywords are set on designated Wikipedia pages. For example, if I set "Pakistan" as a keyword for the page https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources/Noticeboard, I would receive notifications whenever "Pakistan" is mentioned on that page. This feature would be beneficial for users interested in topics related to Pakistan or other specific subjects, allowing them to stay informed and contribute to discussions even if they are not actively following those pages. This is similar to subscribing to talk page threads.

Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):

Benefits (why should this be implemented?):