@simi11 Disqus is the platform that tons of websites, including Viki, use to manage their comment system.
For the record, the official reply a day ago from the support thread:
Thanks so much for bringing this to our attention. We have been on a no-ads plan with Disqus for many years, but a recent change on Disqus service turned on ads for Viki without our knowledge. We're currently looking into this and awaiting Disqus reply to take action and remove ads from our site.
I sincerely apologize for the questionable content of these ads, but right now we're not able to even edit what gets served to our users. We expect this to be solved in a few days.
Please let me know if you have any other questions at the moment.