no.
Most of the answers on WikiAnswers are not dumb. Most of them are very good answers. Some questions end up with spammers and vandals. That questions may be answered with an dumb answer.
Yes. For your information, the site that you are posting this question IS WikiAnswers. Sometimes, it is true that WikiAnswers' answers are not true. However, most of the answers are true. Sometimes, there are vandals who make turn true answers to false answers, but it is false to say that WikiAnswers is not true. To find out whether WikiAnswers' answers are true, sign up now to become a true WikiAnswers Contributor! Be true to yourself if you get addicted!
Yes, most of the answers on WikiAnswers are legitimate answers. You can tell if they are legit answers by the user's trust points. ID's do not have trust points, and you are taking a chance at taking their answer as legit since they do not have trust points. Most of the answers on WikiAnswers are in fact legitimate answers.
No, it is not. WikiAnswers is a very good source of information. Although some answers may be incorrect, most answers are correct and very detailed.
Yes, most people on WikiAnswers can answer, at least new answers. Only registered users can do most of the other stuff on here.
Most answers that are closed to edit are closed by the Supers (supervisor's)
Wiki answers most of your questions but not all of them!!
By winning loads of awards or by giving the most answers or the best answers.
No, wikianswers is not inferior to yahoo answers.
The reason WikiAnswers does not have any pictures in answers is mainly for legal purposes. Most images these days are copyrighted, and cannot be posted on WikiAnswers. Thus, WikiAnswers sticks to the text-only answers it uses today.
Many people use this for answers a lot. WikiAnswers is the 13th most popular site on the web, so many people use it for answers. You are also using WikiAnswers for answers because you don't know the answer to your queston, too.