Yahoo Answers is better:
Question Structure
WikiAnswers is designed more to answer universal and relatively simple one line questions.
Yahoo answers can answer more complicated and personalized questions.
Audience
Yahoo currently has a wider community who comes to both ask and answer questions. As Yahoo is a web portal, people who come to Yahoo for other things (eg. web search, e-mail or news) may also find themselves asking or answering questions. The personal nature of Yahoo attracts more people to Yahoo.
WikiAnswers has a smaller user base, and is not tied to a major portal.
Answers
On WikiAnswers, answers tend to be relatively better. Answers can evolve over time, as opposed to only having to be entered within a few days of the initial question. Yahoo Answers has much more false/unhelpful answers, and much more spam.
User Powers
On Yahoo Answers, every user is treated equally in terms of powers, but there are limits to how much one can do each day depending on the level they are at. One vote counts as one vote. On Wiki Answers, supervisor powers trump regular users.
Previewing Answers
On Yahoo Answers, you can preview your answer; on Wiki Answers, you can not.
No, wikianswers is not inferior to yahoo answers.
yes
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.
WikiAnswers is better because you don't need an account to type in an answer
You could try answerbag or yahoo answers if you don't like wikianswers.
TimTebow.com and DerrickRose.com!
yahoo
Yahoo is a web portal containing links to more topics, e-mail, web search, news, web pages, answers, etc.. WikiAnswers is only designed to handle answers, but is better designed, and less ad cluttered. It is subjective. WikiAnswers is probably better than Yahoo Answers; Yahoo as a whole is more useful.
They are both good, but it depends upon what you are looking for. WikiAnswers is better if you want answers from a dictionary or encyclopedia or something. Yahoo!Answers is better if you want answers for something else random or about relationships or something. You can also edit your question more on Yahoo! Answers, and get points for answering questions. ^ if wikianswers were just about dictionaries etc, whats with the categories?
We think it is. (see the related question)
Jody made a comparison between WikiAnswers and Yahoo Answers and found that WikiAnswers was much better.
Wikianswers.