Probably the most popular community Q&A powered site with millions of users and thousands of questions asked and answered every day.
All the questions are categorized in such a way that you can easily search for a related question in a category or place your question in a relevant category.
Answers are rated by visitors and the best-rated answer will be displayed as the best answer for a question.
You need to register with the site in order to ask or answer the questions. To make the users participate actively, it has a points system.
When you ask a question you’ll spend points and when you answer the questions you’ll earn them. If you want to answer with live URL need Yahoo level 03 account.