We block mobile phones with some similar rules to the ones in this web page
http://www.cyberciti.biz/faq/setting-up-nginx-to-redirect-mo...
21 karma · joined February 17, 2014
A standard for how to display might be called for, perhaps?
We don't want anyone on the platform who isn't aware/comfortable with it. Our instructions to the websites (when they join) are to create a link to the opt out page. I supposed it could be a direct opt out
https://ss.crowdprocess.com/opt-out.html
Having said that, I am the first to admit that many websites aren't currently displaying this, we need to work on that.
The incentives must be: if you do not comply, your content won't be monetized (as would happen with ads).