I'm an Opera Mini beta user in Taiwan and I'm keep seeing commercials concerning sex videos in the news feed of speed dial.
Here is an example of one of the ads:
http://imgur.com/eXsgXZE
It's basically an ad leading to an adult live-streaming video community and I am seeing this kind of time every time I try to read some technology news in the news feed.
This is kind of disturbing because I think Opera is a pure browser, it should review its ads before publishing them. What if a little kid misclick it and download the app? Interestingly Opera can get paid of it.
So what I'm saying is please reduce this kind of ads(I don't know if other countries are showing this kind of ads but) at least please review them, thank you.