I would argue that on MP, the likes system has reduced the average quality of posts. Many people post meaningless nonsense, such as "hi", just to create more posts that can be liked. Some even advise newcomers to do this. Of course, it's an apparent race for status, but I also suspect that some people over there just like to see all the likes they're getting. It all started with a thread entitled something like "I just want to be liked...." that begged people to like the OP's posts. IMO initially it was cute, but all the likes over there have become rather ridiculous and off-putting.