Informal aspects of everyday learning

From
Jane's E-Learning Pick of the Day: Questler: "Quests in Questler are mini-blogs of information categorized into 6 types, Query, Observation, Discovery, Research, Media and Story. Each of those types represents an informal aspect to everyday learning."

Got to try to track down the theoretical underpinning of this social networking application but it make sense to me as a heuritsic if nothing else.