Today, if you want to tell the Starmind algorithm that you don't want to be notified on a new question or certain topic, you can do this via the feedback option in the notification email and in the question view (pop uu module on the top of the question).
Via the user profile, you have the option of removing those topics with which you do not wish to be associated via the profile. So, this will not change the question recommendation of the algorithm.
From our perspective it would be very helpful if the algorith could learn from profile changes as well. Especially if users "hide" certain tags in the "Expertise topics" in the user profile.
Dear Starmind customers: I hope that this request makes sense and would be helpful for you as well. If yes, please support us with your vote. :-)