Yes, you can submit a question without an account on WikiAnswers.
Yes, you can.
If you are an anonymous contributor at wikianswers, you participate in wikianswers but without a wikianswers account.
Try answering the question after the joke.
There are over 20 million questions on WikiAnswers. Without doing the math, it is extremely unlikely.
Yes, unregistered users can answer questions on WikiAnswers but only registered users are able to edit answers.
One way to to merge another question into the question as an alternate. The answer for each alternate will be added to the answer already their. The ability to merge questions together is one of the extra tools given to supervisors.
There can be several reasons for that. Some people may answer carelessly, or sometimes the question is not quite clear.
Because Wikianswers uses the question title in the hyperlink to that question, it needs to remain short and succinct, without using certain non-alphabetic characters. If a question needs further information, the question asker can use the Discuss feature and add it there.
No, anyone can ask a question, even without signing up. That is the beauty of WikiAnswers!
Ask your question, but then reask it in the discussion section of the question with the appropriate punctuation.
You have just performed the task yourself - without any help from the rest of us ! Congratulations.