Embodiments of the present invention provide a method, system and computer program product for game determined tag relevance for social bookmarking. In one embodiment of the invention, a method for the game determination of tag relevance for social bookmarking can be provided. The method can include rendering a game user interface in connection with content in a content browser, providing a list of tags previously associated with the content in the game user interface for a game participant and receiving relevance values for the tags through the game user interface provided by the game participant for each of the tags, comparing the relevance values to relevance values provided by others to generate a score and presenting the score in the game user interface, and applying the received relevance values to the tags to improve quality for each of the tags in association with the content.