Yes. WikiAnswers is used by millions of people every month. However, they don't all come directly to WikiAnswers. Many people go to Google or another search engine, and their search leads them here.
Looking up answers for projects and researching stuff in general.
To ask and answer questions.
Yes, WikiAnswers does have a user base in China.
Curious people use WikiAnswers, along wiht many other kinds of people from all over the world. Curious people want to know an answer to their question, so they go to WikiAnswers to find the answer. There are many other types of people who use WikiAnswers, in fact, millions of different individuals use WikiAnswers.
Brands can have account on WikiAnswers. Anyone can have an account on WikiAnswers. You cannot use WikiAnswers for spam; it is to be used to only to answer questions for people or ask questions that people may want to know.
Wikianswers helps people by giving them answers to their questions. In addition to that, your frequent use of wikianswers will make you more knowledgable.
Anyone can use WikiAnswers that knows about WikiAnswers.
yes, they use them to eat people's time.
Well, if you looked at the number of people who use Wikianswers, then you will see that there are actually not that many people desperat for relationship advice.
Perhaps they do not know better.
I don't hate it but people hate WikiAnswers because its not great to use as a source on a bibliography for an assignment.
No. Some people do use WikiAnswers to research their homework and others can find their question on the site, but this is no different to using any other site on the Internet to find information; WikiAnswers just makes it easier to find a specific and simple answer.
Because people are lazy and if it wasn't easy to use no one would use it.
Nobody is compelling you to use Wikianswers.