I was doing some 'independant' testing today since I'm bored and I've never seen the issues folks are seeing with the popups and A/V blocking pdfs and other files.
While messing aorund I noticed when I clicked on the Doba ad on accident it sent me to some sort of doba clone site.
When I tried to close the tab in IE, it displayed a popup telling me I was missing a great deal and to click cancel on the next popup.
I 'x''d out of the popup and I was able to close the tab as normal.
I've clicked on the other ads out of curiousity including the eHarmony, Camp store and Brighthouse ones without issue.