Google Answers used to be a Q&A site, similar to Wikianswers, with the exception that they charged for researching questions. In other words, the service was not free.
"Google Answers was an experimental product for users to get help from Researchers with expertise in online searching. Users could post a question to Google Answers and specify how much they were willing to pay for an answer. A Researcher then searched for the information they wanted and posted it to Google Answers. Users were only charged for questions only if and when an answer was posted to it. Other users may have also added comments to provide interesting perspectives to the data but were not paid for their posts. These questions and answers are now publicly viewable on the Google Answers website so other users can share the benefit of the research. We are no longer accepting new questions and answers."
This used to be the home of Google Answers.