How to set up reddit keyword alarms

1. Go to the subreddit of your choice, for example r/Entrepreneur
2. In the search bar, enter the keywords you are interested in, for example
   "invoicing" AND "as a service"
3. Modify the URL of the search result page by inserting .rss between the last slash and question mark. For example, change
   https://www.reddit.com/r/Entrepreneur/search/?q=
   to
   https://www.reddit.com/r/Entrepreneur/search/.rss?q=
   Keep the rest of the URL unchanged.
4. Copy the new URL and subscribe to it in your favorite RSS reader.
   

That would be it! Posts with relevant keywords will keep popping in.