I seem to easily miss the alerts that someone has posted in a watched thread. It isn't unusual that I have 10 alerts in the morning, with likes, quotes and replies interspersed. They quickly fade from yellow to blue, and if I am not careful, or go to the watched threads page, I sometimes miss an alert. I suggest that rather than immediately dismissing or greying alerts that there is a new reply on a watched thread, that these remain yellow and highlighted until I visit the thread. As an alternative, maybe give a repeated alert every 4 or 6 hours that there are new replies to Watched threads. I know that I can go back to the Watched Threads page, but that requires remembering to do it, and I'd rather have an alert as a reminder.