Yedda is about questions and answers, and Yedda's users ask many questions that the answers for simply can't be found in Wikipedia or Google. See, for example, the questions about buying a dress for bred's girldfriend, or ralph's gay(?) friend.
You're right when you say that many of the questions are questions that the answers for can be found somewhere else on the web, but not everyone has the skill to find everything they need.
