Glad you asked! Though people have different reasons, my experience is pretty common. I asked a question in Google search and WikiAnswers was one of the search results. I asked my question on the site and while I was waiting for the answer, I started answering questions. My question was answered pretty fast, but by then I was totally hooked on the site. That was in 2006 and I've been here since.
That is for each viewer to decide.
Usually, it is the WikiAnswers Staff (the Community Assistants) who decide what the WikiAnswers Bot's name is. However, on rare occasions, there is a voting among the community for the name of the new bot.
WikiAnswers itself technically does not lie. However, there are some users that decide to vandalize, spam, or put incorrect/inappropriate answers into questions.
Yes. For example: "About what time did you decide to ask this question on WikiAnswers?"
WikiAnswers can be untrustworthy because there are vandals who decide to spam questions, or users who answer questions that they do not know the answers of. However, there are many users on WikiAnswers who are experts on a topic or do research for a question and can be considered trustworthy.
Go onto google and type wikianswers
WikiAnswers is a company, and companies do not go to school. However, the people who work for WikiAnswers did go to school, and many contributors that contribute here have been in school or are still in it.
People find Wikianswers and some like it a lot, so they decide to become a member.
It was probably decided that this question adds no value to WikiAnswers because no one really knows what it takes to become famous; most of it is luck.
View the Related Link below to go to the WikiAnswers sandbox.
This question is not really one wikianswers can answer, but I suggest that you visit their websites and decide for yourself.
Wikianswers was founded in 2002. For more in-depth information, go to http://www.answers.com/wikianswers