It was useful but people have been saying things like "find out yourself, that is what school is for, do the math" and it isn't as high as it used to be anymore. Answers.com is by far the best place to find your answers.
Yes, Yahoo answers is useful as they usually have good answers, as well as answers.com.
Yahoo! wrote Yahoo! Answers.
WikiAnswers is similar to Answers. There is also Yahooanswers. Wikepedia is also useful.
Yahoo is a web portal containing links to more topics, e-mail, web search, news, web pages, answers, etc.. WikiAnswers is only designed to handle answers, but is better designed, and less ad cluttered. It is subjective. WikiAnswers is probably better than Yahoo Answers; Yahoo as a whole is more useful.
Yahoo answers questions
According to Yahoo Answers,you need to be 13 to become a member of Yahoo Answers.
No,you can't.Yahoo Answers is launched by yahoo,so hence,to create a yahoo answers account,you need to have a yahoo account.
No, wikianswers is not inferior to yahoo answers.
You can ask or answer questions at yahoo answers at any age,but Yahoo Answers says that you need to be 13 to create a yahoo answers account,same for Facebook,Wiki Answers and many other sites.
No, you must sign up with Yahoo to be able to post or answer a question on Yahoo Answers.
You need to create a yahoo ID in order to do it.If you have,then click on Get Started on the right side of the yahoo answers page,fill in your yahoo id and password and hence,you have a yahoo answers id.
You simply need a Yahoo Mail ID. Through yahoo mail address you can register and then sign in to yahoo answers.
You can use the alternative of yahoo answers for Pakistan that is answerpk.com