Reporting:

Reporting is the in-game process of flagging a player for behavior that violates Dota 2’s rules or sportsmanship standards. Reports are used after a match or during play to indicate issues such as griefing, abusive chat, intentional feeding, or other disruptive conduct.

In Dota 2, reporting matters because it helps the game’s moderation systems review player behavior and apply penalties when appropriate. It is separate from muting or ignoring a player, which only affects personal communication or visibility.