This has been brought up a lot and is something we have had in mind a while. We would like to have a notification system but are unsure if or when it can be made.

Thanks to GrandMasterD for my sig!
You need to log in before commenting.
Let's take these two typical situations:
Situation 1: I have published a guide. As time goes on, It's hard to keep track of new comments. Sometimes people ask me questions about my build, yet I don't notice them. Right now, in order to make sure that I didn't get a new comment, I have to memorize the number of comments on the discussion section, and compare it to the actual number of comments everytime I open my profile.
Situation 2: I am participating in a thread, and decided to make a statement. The day after, I have been quoted by X on that statement, and he expressed his opinion on what I said. Unfortunately, I forgot that I have participated in that thread, therefore I never get knowledge of X's opinion.
What I suggest is a simple notification system that alerts you when you are quoted, when you have a new comment on your guide, when someone favourites your guide, and many more similar "alert-worthy" events.
Is this possible? It could be implemented near the Settings and Private Messages widgets on the top right of the page.