There are threads I post in but no longer follow (ie, gpucoin) but I still get notifications for it under "Show new replies to your posts" what steps must I go through to make it stop showing up?
Unfortunately you cannot 'unfollow' threads under "Show new replies to your posts". Use the Watchlist instead which allows you to add or remove threads.
Way so you remove the posts you don't want to be noticed about by removing them from watch list? It has like every post I've made, time to start clicking xD