Who are the writers of Answers.com?

Wikipedia can be edited by anyone on the internet; this is its strength and weakness - anyone who spots an error can correct it, on the other hand vandalism often takes place on entries; particularly contentious articles (articles on religions often attract strong feelings). Wikipedia has various mechanisms for correcting errors; people can be banned from updating articles, articles can be locked to prevent modifications. One of the key things to look for is citations; facts on Wikipedia should be citated; you should be able to check the citations to see where the facts came from.