How long does it take for a StackOverflow question to be answered?
Although most questions on StackOverflow are answered in less than an hour, we observe that about 30% of the questions which are not answered within an hour have a response time of more than a day (see Figure 1).
What is stack exchange used for?
Stack Exchange is a network of question-and-answer (Q&A) websites on topics in diverse fields, each site covering a specific topic, where questions, answers, and users are subject to a reputation award process. The reputation system allows the sites to be self-moderating.