Yes, they can be found all around the site.
The Answers platform is wiki based - any user can ask, answer, edit or vote on the quality of an answer.
Yes, people change answers on WikiAnswers all of the time. It is to better the quality of the answer. So, yes, it is completely true.
Yes, there are some videos on Answers/Wikianswers, but it is mainly written answers at this stage.
I do not use Answerbag in addition to WikiAnswers. Answerbag is much like Yahoo! Answers, and has the same quality flaws as Yahoo! Answers. The answers are as-is, while WikiAnswers has an answer being worked on by hundreds of contributors until the answer is perfect.
There are many good answers on wikianswers. Unfortunately, as with any public wiki site, there is a risk of vandalism and unintentional wrong answers.
The reason WikiAnswers does not have any pictures in answers is mainly for legal purposes. Most images these days are copyrighted, and cannot be posted on WikiAnswers. Thus, WikiAnswers sticks to the text-only answers it uses today.
The answers are provided by many hundreds of WikiAnswers users, and there are many thousands that have accurate answers. If you are in doubt about any answer, please research the material. The answers are not always 100% correct.
Wiki answers most of your questions but not all of them!!
If you ever find any of the answers on WikiAnswers to be wrong, just replace the incorrect answer. We all make mistakes, even the best of us.
No, wikianswers is not inferior to yahoo answers.
#Interior design
WikiAnswers does not have access to answers to any kind of textbook or learning platform, including those based online.