Yahoo! has launched a search sevice that allows users to ask questions using full sentences and not just keywords on Thursday.You will be notified via email when someone answers your question. Your question will be kept open, accepting answers for 14 days. During this 14 days, you should come and choose the best answer among all the answers posted. Or, you can ask others at Yahoo! Answers to vote on the answers received..The only thing that you need for using this feature is a valid Yahoo! ID. The above mentioned service from Yahoo! is available at answers.yahoo.com. Just check it out.