StackOverflow: Comm. Version APP
Users also have the option to keep tabs on a tag, filter out questions by tags, search for any tag of interest, share questions and answers with themselves or other developers.
Users can also search for a particular problem they are having by typing in any search query or by capturing an image (OCR). Questions are curated based on the search query and presented to the user; again, the user can pick a particular Question to view the provided Answers.