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It depends entirely on who "you" is and the extent of the envisioned change.
In order to add information to the end of a question or to modify a previously made contribution of yours, all that is necessary is to be a WikiAnswers Member. However, some questions are locked due to frequent vandalism or disputes. In those cases, to even do a minor change without being a Supervisor is not possible.
Modifying or removing someone else's contributions is a more complicated process. Only Supervisors should do this as it comes dangerously close to "blanking", which occurs when an acceptable answer is removed or altered. A non-Supervisor should add a second answer below, explaining the answer more clearly and perhaps even arguing with the other contributor's answer in a purely academic fashion. A Supervisor will see this and make the corresponding edits.
What else can I help you with?
How do you watch questions on WikiAnswers?
To watch questions on WikiAnswers, if you are on a Question's Home Page, click "Get Updates" and you will now receive updates when the answer has been edited, answered, etc. To view/change your watchlist, go to the blue tool bar to the left of the page. Then, under "My pages" at the bottom, click "My watchlist" to change/view your watchlist.
Why was an answer I submitted to a question edited it bears no semblance to what I said and I would like to know why?
All content on WikiAnswers are subject the change. WikiAnswers' goal is to improve questions and answers over time. No contribution on the site is owned, neither do contributors nor does WikiAnswers own contributions. The site is a "wiki," a community, where those invoked and who contribute share to create meaning for submitted questions.
On WikiAnswers how do you find your own questions?
UNREGISTERED: In the "Enter question or phrase..." bar, type in your questions and find your question.REGISTERED: "My contributions" (on the left blue bar under the section "My pages") > "action" to "Questions (asked)" (in the drop-down menu "Filter by:") > Find question
Why is Wikianswers editing questions?
It might not be wiki. Other people can change them.
Why have WikiAnswers changed the background color of questions?
I believe that concepts have to change once in a while and it was time that wikianswers had a change in colors and information brought to you. Nice move.
Religions should change their views?
That is a statement of your opinion, not a question. WikiAnswers is for questions.
Do you know that these coin answers are wrong?
If you find a wrong answer on WikiAnswers, you are welcome to correct it. That is the way WikiAnswers works, anyone can answer a question, and anyone can change what another has answered.
Can you change an answer that you answered on WikiAnswers.com?
Yes. You or anyone else can change an answer on WikiAnswers. That's the whole point of a wiki. There's an "improve answer" button under an answered question. The exception would be an answer that's locked.
What can be done to improve the quality of the questions submitted to WikiAnswers?
Ask better questions... you can't change what people ask =P
Why does WikiAnswers change 'I' to 'you' in the questions?
WikiAnswers changes 'I' to 'you' in the questions because WikiAnswers prefers second person over first person questions. It is part of the WikiAnswers Style Rules. It also makes the whole database a lot less hard to manage. Since we merge together questions that are asking the same thing, changing I to you automatically prevents us from having hundreds of thousands of other "I" questions that we would have to merge together.
Who gives the answers to the questions?
You can if they are un answered but to change an answer you need to be a member of wikianswers.com
Why isn't the blocking of vandals counted as contributions on WikiAnswers?
Because blocking vandals does not change the actual appearance of the site.
