The Ask Ubuntu lens has hit the Ubuntu Software Center after being submitted via the Ubuntu App Developer and approved by the Application Review Board (ARB). It’s now a breeze to install the lens on Oneiric. Simply open the Ubuntu Software Center, search for Ask Ubuntu, and install the lens!
Once the lens is installed you can use it to answer queries you have while you use Ubuntu. For instance, if you have a question about how to find you Public IP address or how to configure Unity, just type the question or subject matter into the lens and a list of questions, tags, answers, and actions will appear. If you can’t find the answer you’re looking for you can opt to Ask the Question on the site in order to get an answer.
In addition to searching Ask Ubuntu, you can also search for subject matter in other areas. The lens will allow you to filter from one of the man Stack Exchange Q&A sites which cover a wide variety of subject matter from Server Administration, Cooking, Gaming, WordPress, Andriod, Parenting, and many many more.