One powerful effect of Lobsters tagging is that it limits the topics which are allowed in a very deliberate way. A story should be tagged `programming` at the l

One powerful effect of Lobsters tagging is that it limits the topics which are allowed in a very deliberate way. A story should be tagged `programming` at the least, because Lobsters is about programming. This helps make it more clear when something is news, politics, advertisements, or other off-topic content that doesn't relate to what we do. Of course, there are tags like `meta` for discussing tags. There's also a recommendation system that allows users to suggest that a story be retagged. Posting a video or PDF causes the `video` or `pdf` tags to be automatically applied. It's a rich system, not just a many-to-many listing of labels.