I tried leaving them on awhile ago. Had my adblocker exempt Nexus. My computer became completely unusable. See, I run a bunch of "reminder' tabs, but have my browser set not to load until I open them. And yet, every fifteen seconds or so, each and every tab, accessed or not, would cycle the new ad. I'll try again and give it a day. If I'm choked down again, much as I love you guys, never again.