I have been an active member of UX Stack Exchange for a little over 2 years and in that time, I have noticed the Community bot push years old posts to the top of the questions homepage.
Now, I understand the algorithm is designed to help less active and low attention posts get some attention but the whole process seems counter intuitive to me. Many a times, the Community bot will push multiple older posts to the top leading to newer posts being dropped from the visible section of the screen. Although there could be an argument for the "Week" tab being used, we all know how the users interact with such forums. Majority of questions that aren't about mainstream topics or trending topics tend to get pushed down due to the Community bot. Unfortunately, most of these questions that are pushed to the top also tend to be out-of-date, which means the whole idea doesn't work as well as it is supposed to.
I'd love to hear some arguments in favor of the Community bot and maybe even suggestions to improve the way it promotes such posts.