Posts asking for recommendations on Xiaohongshu almost universally get replies saying DM me. On the surface, this looks like information opacity, but underneath it is a complete business logic and platform rule system.
From a business perspective, the essence of this behaviour is the commercialisation of information asymmetry. Giving an answer publicly means the value of that information instantly drops to zero. Keeping the answer behind a DM means the information can be priced, traded, and screened. Everyone who replies DM me is operating their own information asset.
From a platform rule perspective, the algorithm and content moderation of the public comment section also incentivise this behaviour. Leaving contact details publicly may trigger the platform sensitive word filter. Calling for a DM avoids this risk. At the same time, DM conversations move users into private traffic, reducing dependence on the platformtraffic.
From a user psychology perspective, public replies amount tounpaid contribution, while DM conversations can establish one-to-one trust. In scenarios that require deep communication, such as renting, job hunting, or consulting, DMs are not just a transaction method. They are also a screening mechanism. People who take the initiative to DM have more genuine needs and a higher probability of closing.
This phenomenon reveals the deep structure of the platform economy. The public area is used for exposure and traffic generation. The private space is used for conversation and closing deals. This is not a loophole in the rules. It is the underlying design logic of the platform. People who understand this logic are not exploiting aloophole. They are aligning their business with the structural characteristics of the platform.