@benjackson84 Have a look at the WordPress guidelines, and specifically on point 7 (first and second bullet-points):
https://wordpress.org/plugins/about/guidelines/
Your plugin seems to violate both guidelines.
Also the fact that you mention the advertisements in your T&Cs in your website, but still there is no single reference in the WordPress plugin’s site, is at least suspicious. You can’t seriously expect from a user to dig through your website and to find the T&Cs.
Finally, for using our data for marketing purposes you should ask for user’s consent (opt-in), which I don’t remember your plugin to do.
Anyway, I stopped using your plugin and I don’t plan to use it ever again. I just want to inform the rest of the users about the potential privacy breach.
Best,
Michalis
If you need any more proof, just check Slingpic javascript that is imported into the wordpress installation.
Open the following file and search for affec to easily check that the plugin contains malicious code:
http://cdn.slingpic.com/js/slingpic.plugin.js?v=5
P.S. Affec is an advertisment company and you can find more info here:
http://affectv.co.uk/