Self-promotion is allowed on a contributor's Profile page but never in an answer.
Most likely the contributor is a robot. Most robots will be blocked from the site by a Supervisor. If you are a contributor, you should report your finding to a Supervisor, who will deal with it accordingly.
However, if it is a normal contributor, the user will be warned by a Supervisor to stop advertising in answers. If the user does not heed the warning, their account will be suspended. WikiAnswers is a Q&A site, and it not to be used for advertising.
By adding a question, answering a question, editing an answer or question, adding or getting rid of categories on a topic, or sending a message to another contributor. You can keep track of you contributions by making a WikiAnswers account.
Provide 1000 contributions to Wikianswers. Answering question, categorizing questions and fixing them.
Pride for answering a question, if you'll take it. You'll have +1 contribution, which takes you closer to earning a badge: Contributor, Bronze Contributor, Silver Contributor, Gold Contributor, Platinum Contributor, Double Platinum Contributor, or Ruby Contributor. Also, you may earn trust points for answering a question.
A Ruby Contributor is a WikiAnswers user who has reached 500,000 contributions. You can view all of the users who have reached Ruby Contributor status by checking out the related question below.
The point of WikiAnswers is to ask the entire community of contributors the question, and not just a single contributor.
There is no 'best answer' facility on WikiAnswers - it's not like other forums such as Yahoo ! - where people are allowed to vote for a best answer. On WikiAnswers, people who find a contributor's answer interesting, humorous or informative can award a 'trust point' - but - there is no guarantee anyone answering the question is actually qualified to do so !
You get one contribution point for answering a question, as it is only one action.
No, WikiAnswers is not fake. If WikiAnswers was fake, you couldn't have asked the question you asked, and I wouldn't be answering it. So, WikiAnswers is real.
It is up to the individual who is answering the question, not WikiAnswers.
If you are an anonymous contributor at wikianswers, you participate in wikianswers but without a wikianswers account.
The questions are answered online, so answering that question is impossible.
There is no bad thing about answering a question on WikiAnswers, there are only good things and benefits. Like, for the user that asked the question, now they know the answer that they were longing for. And, you, you just shared your knowledge, doesn't that feel good?