Gamification isn’t enough: we’re missing something big here ~ Innovation Investment Journal | Wikis and WikiSkills | Scoop.it
Video gamers do not only 'play a game'. They also rely intensively upon developing and using ‘tacit knowledge’ to play a game. Affinity space is the place where all that tacit knowledge can be made explicit, where the in-game experiences can be described, where relevant insight, capabilities and skills can be shared, debated and imparted within a ‘community of interest’.

No wonder wikis are sometimes these 'affinity spaces'...