This is a first for me -- the firewall at work blocked a survey site that e-Rewards redirected me to because of "pornography." I am not sure of the exact subject matter because I had just gotten redirected there after answering screening questions at a different URL. But from the screening questions, I am sure there was nothing of a NSFW nature. Here is the first part of the URL that got blocked. Note that the letters "s e x" are part of the domain name. I am sure that that is why the blocking occurred.

URL: https://surveys.qsext.com/Projects/...