Do Quora, Jelly and Ask.com answer things correctly?

Social networks, search engines, and new apps are trying various strategies to answer your questions. At the same time, all of them have one big question to answer for themselves. If someone wants to know something, why shouldn't they just Google it? Google's search engine framework has limitations that are being exploited by a new wave of companies. For instance, with Google you can't use your phone to pose a question with a picture. You also can't ask for responses from experts or friends. Venture capitalists think these approaches have the potential to make some money.