That is an auto-detection feature. "Gibberish" is anything nonsensical, and sometimes posts are just that. But people who insist on putting five exclamation points after sentences, people who write words like "so" with a string of eight "o"s in it - those kind of posts will get flagged as "gibberish" every time. If one writes answers in clear, correct English, they will virtually never get flagged as gibberish.
It means that is has been flagged by a wikianswers bot because there is offensive or otherwise inappropriate material in the answer.
The flagged question will be taken care of by Special Project Assistants (SPA) or Supervisors, or even just helpful users. The Flagged Questions is a warning sign, and can mean tasks for the SPA team.
I do not know what you really mean I think this question should be flagged.
It is gibberish.
It is gibberish.
That depends on what was wrong with the question. The flag will tell you what you did incorrectly (i.e. posted profanity, multiple exclamation marks, poor grammar, false information, etc.) so your best bet would be to see what the flag says and fix the answer. When in doubt, contact the supervisor.
It means something is marked for future processing, or marked to catch a supervisor's attention.
It is meaningless gibberish.
Nothing, -it is gibberish.
That is not a word, it is gibberish.
It has no meaning; it is gibberish.
There is no such word, it is gibberish.