In your user preferences, there will be a new section called “Saved Searches”. In each input field, you can save up to 5 terms you wanted to be notified of.
For example if you want to be notified about any new posts on reports you would add “reports” to your terms.
Once a day, these searches will be run. If any new results are found, you’ll receive a private systemmatch message with links to the posts that your search terms. You won’t be notified of any posts that you’ve already seen.