Regarding your concern,
- Be as usual Q&A website, there is no fee for participants on the website using theme QAEngine.
I would like to inform you that there are commonly 2 ways to make money from your site:
- There are payment gateways to help admin monetize from selling packages for users to pump their questions.
- Displaying Advertisement (Google Adsense via widgets)
I assume you’re new to QAEngine, so here are my suggestions: