Why is Answers.com an unreliable source?

It is actually a reliable source, as long as people put in the correct answers.

However, there's no way to confirm that we are putting the correct answers, and you don't really know who any of us are or what our credentials are. You just have to trust us, and in the realm of factual information, trust carries little weight.

One way to know is if we put sources or related links. This way, you know that the answer is credible.