Now this doesn't mean that you have to spend whole day answering questions. It means that you have to be active every day and answer at least 10 questions, so that your earnings don't drop down.
Also be active to level up your account. A chart showing each level can be found here.
Quality answers play big part. Make sure you provide the best answer on subject asked, so that your answer can be awarded. Also when posting, check for spelling, grammar and punctuation, this is very important as it could affect your quality score.
The more awarded questions you make the more earnings you will make.
You can also earn extra money by referring traffic and new users to WebAnswers.
These are the most important steps to follow in order to have quality score and earnings.
You can Sign up now and start making money and having fun all in one!