The best way i've found of keeping track of these particular things you are interested in, since they don't seem to record in your profile, is to mark pages as favourites until such a time as i'm no longer interested in them. You can also use your browsers history log to check back for those pesky ones you've lost and want to 'favourite'. This is just a workaround to help you find things but won't alert you when replies have been made that require your attention, that will be down to you to check back on... or open a private message thread with the GM of the campaign in order to get alerted to new replies from them, assuming they are inclined to have one-on-one contact. Sorry there isn't a better, nailed on, answer at present!
