WikiAnswers and Yahoo! Answers are both very popular sites that people go to for answers to their questions and solutions to their problems. Both sites are working in a positive way as collaborative social networking sites to serve their users. Both sites are dynamic platforms for their user communities who ask questions and provide each other solutions.
 
Basic Differences
Although both sites are dynamic user generated content sites and their basic purpose is the same, they differ quite a bit from each other.

In Yahoo! Answers, different users can reply with answer to a question, then the asker can select the best [...]

If you have a problem or a question, what would be your strategy to get the most accurate answer or solution related to that particular situation? You could ask your most knowledgeable friends or family members, or maybe even look in a book, but you would probably spend a substantial amount of time getting a satisfactory answer that way.
If you go straight to the internet for your answers, then you don’t need to worry, because gone are the days when you had to rely on books and asking experts for the answers to your questions. There are many websites that [...]