Since WikiAnswers is fueled by anonymous and registered contributors worldwide, there is a chance that your question may not get answered. There is a possibility that your question will not be answered by WikiAnswers for a number of reasons, anyway. However, there is also the possibility that all of your questions will get answered.
Wikianswers does not answer your questions. It is people from around the globe on the internet that answer the questions.
WikiAnswers does not necessarily provide answers to all questions submitted. WikiAnswers questions are answered mainly by contributors from the community, so the number of questions answered relies greatly on the users of WikiAnswers, and the amount that they are able and prepared to contribute.
Wiki answers most of your questions but not all of them!!
Unfortunately not all questions that are asked are good questions some need to be trashed, that is why there are supervisors. It might be because they might not have enough information to answer or that they just are not appropriate for WikiAnswers.
The question "What is the WikiAnswers Mentoring Program all about?".
Not all the questions in the world... just the ones posted on this site.
yES
WikiAnswers doesn't 'block' inappropriate questions, but rather stores them so no one can answer an inappropriate question that has already been asked. It is called a 'Catch-All', and it stores all of the inappropriate questions so when a user types in an inappropriate question that has already been asked and merged into that Catch-All, they will get an answer telling them that inappropriate questions are not allowed on WikiAnswers. In a way, WikiAnswers does 'block' inappropriate questions.
No, not all of them, but certainly some of them.
when there are no questions left
You can answer all questions. You just have to find out what category they are in, and Answer away!
Yes, they can; there are no secrets on WikiAnswers. Members can see all of your contributions.