I have been using the Stack Exchange App (iOS) for a little while now and have come to really appreciate what it brings to the table. But I have found one useful feature that does not seem to be implemented into application: the ability to receive notifications for a specific tag.
I feel this could be extremely useful in so many ways. The main reason I would like this feature is to follow certain tags that tend to be not widely used, for example the tag
diablo-3 on Arqade.
Questions are not all that common for this tag and although most do get answered fairly quickly I would like to know when a new question has been asked for this tag to give some input of my own. Instead I find the question days after when any more information seems not all that relevant anymore. Even if I have nothing to offer for the question I would know that the questions has been asked and could return later to take a look at the answers and learn something new.
I understand that certain sites (SO) could cause a few problems for users with spam of questions on certain tags but that would be the users choice by turning on these notifications.
The main question is: Does this feature already exist within the application and I have just overlooked it?
If not is this a feature that could be useful to other users of the application and all Stack Exchange sites?