Many do, and many use this site as a source of reference. Wikianswers is open for all to try and answer any question. There are people that vandalise this site but there is also a group of people that try to weed out these vandals and help others on the site. Unfortunately this task cannot be accomplished as quickly as we would like.
No one is forced to answer questions here, but you can IF you know the right answers.
People on Wiki answer questions that they don't know the answer to because they are idiots. I don't know why this website is up anyway, because most of the time the answers are crappy and stupid
Accountants are the best type of people to speak to about tax questions. They should be able to answer any of your questions or at least know where to find the correct answers.
Just random people who know the answer.
When people answer questions when they do not know the answer, often with "I don't know," "stupid," and similar quips, it is called vandalism.
Wikianswers does not answer your questions. It is people from around the globe on the internet that answer the questions.
because people only answer questions when they know the answer to a question.
Because people are stupid. They don't know the answers to these questions.
because people don't know them yet
then people would not know the answers to there questions.
Have a look at the profile of the person who answered it if you are in doubt, or you can verify by looking at related questions about the same subject to see if the answers agree. By in large questions answered by a person who has a registered account are good answers, when people want to vandalize they want to do it anonymously.
People answer as they spot questions that interest them or that they know. I know it can be frustrating to wait but with millions of questions, there will always be a backlog. People work on new and old questions every day.