Add to my Library option

Dear All,
I am looking for an option to add certain "forum topic discussion" into my account using an online option like "Add to my Library" . This would help to quickly search and see updates of interested post. Currently, if I save it as file in my computer, although it works, unfortunately updates are not included in it.
There's no such functionality.

But I think if you bookmark and check it regularly, it will be obvious when someone has responded to one of your postings.

Unfortunately there's no ability to be notified when someone responds to a thread you started.

The software running is pretty old and not very feature-full.