It means that you really liked the question, and if you know anyone else that wants to know the answer to the same question as you, you send the link to them, and they can see the same thing you looked at.
You can thank people at wikianswers by either recommending them because they have answered your question or any other questions. Or you can also leave a message on that person's message board and thank him/her personally.
That is because there is no change being made to a question or answer directly by your action, you are merely recommending that someone else do it.
No, recommending a question or a user does not give you contribution points.
WikiAnswers is set up to recognize duplicate questions, but if there's even one word different, both questions will appear. A WikiAnswers Supervisor will usually catch this and combine the answers, eventually.
Recommending questions determines how popular that specific question is. Click the "recommend question" button if you think that question is interesting. It is mostly a popularity ranking for questions around the site. See the related link for more information.
No, it does not.
Yes, you can submit a question without an account on WikiAnswers.
Yes, WikiAnswers is a Question and Answer community.
The question you asked is inappropriate for WikiAnswers.
this question
Any time is the best time to ask a question on WikiAnswers.
The maximum question length on WikiAnswers is 200 characters, including spaces.