Bookmarking the page is definitely the best option, because you can name the bookmark whatever you want, so the reason you are keeping it is maintained.
Sometimes, some of the info you want is not actually related to the original post name, which is what shows on your list of subscribed threads. eg. Thread is called 'Help me', but when you bookmark it, you call it 'Conducting Due Diligence (read from page 4)' or something.
BR