It will help your website in many ways -
WikiAnswers is one of the Biggest Q/A social platform.
Traffic is high quality (US and Top tier country)
Delivery within 48 Hours!
It's quite simple and straightforward. Firstly I will go through your website to understand the theme, accordingly I will search for relevant questions and answers, and mention your website name in the answers.
I'll answer 3 high quality questions with your website name, you can give 3 different links too.
Please note that there won't be a live link, only the name of the website will be mentioned on relevant questions.