Ever need a question answered when you are away from your computer, and only have a cell phone? ChaCha is a free mobile search service that responds to queries asked via telephone or send as a text message (SMS). To ask a question, either call 1-800-2ChaCha or text your question to 242242 (C-H-A-C-H-A on your keyboard). A live person (called a guide) will research your question, and answer via text message.