It is certainly the best if you have a specific question that fits into three lines, and one of the best for specific questions longer than that. However, for general queries there are many other sites and types of website that can help you better.
WikiAnswers!
WikiAnswers is a very good place to search for you answers. There are hundreds and hundreds of trusted users on WikiAnswers who give up their free time in order to help answer questions in a field that they are comfortable in. WikiAnswers is a very reliable source and a wonderful place to search for answers.
wikianswers!
The answer is in your Sociology textbook. WikiAnswers is not the best place to ask for answers to your Sociology homework.
Yahoo! Answers is also a good site, other than WikiAnswers. But I recommend WikiAnswers over Yahoo! Answers. WikiAnswers is the best Q&A site and it has the best community. Yahoo! Answers isn't always correct, as well, and you cannot change the answers or spellings on there. On WikiAnswers, you can edit about everything to make the site better. Yahoo! Answers you can't, and it is a poor Q&A site.
Answers.com, or WikiAnswers!
WikiAnswers only gives you the truth of the question. Whether not it was the answer you were looking for or not. WikiAnswers tries it's best to give the best answers, and a lot of times, those answers are good ones. But, there are some flagged answers, that may say something inappropriate, and that is not what we are about. We are a Q and A site, trying to give the best answers we have. And we will try to give you the answers you want.
There are many online resources, but try Answers.com and Wikipedia or your local library.
My opinion is WikiAnswers
New questions on WikiAnswers do take a long time to get answered, but I wouldn't say that it's the worst place to look up answers. WikiAnswers works great for finding answers to common questions, and it does a good job of answering questions when you know ask right. Check out the related questions below for some ways to get better answers on WikiAnswers.
No. It may not give the best answers. Look for answers by people with large amounts of trust points.
It depends how you ask the question - and whether you place it in the best pace for it to be seen. That said, I have answered this one for you !