My Idea for a Web Application

Well, I'm not too computer savvy so it's taken some time for me to come up with a good web application. I think a great one would be a wiki you can download to your computer that can give you help with day to day stuff. Say, you've run out of oil and you are right in the middle of baking a cake. You can get on the wiki, ask for oil substitutes, and there it is. Or say you get an awful stain in the carpet and don't have the money for professional cleaning. You get on your wiki and it tells you how to get that stain right up. I know that you can google any of these questions and find the answers, but that takes time. A wiki that has the answer pop right up (and not a bagillion answers like google) I think would be very beneficial and time saving in today's fast pace society. Especially if this app is made available for not only your computer, but every electronic that has internet capabilities. I know this might not be the best web app ever invented, but I would certainly get it.