I sometimes receive this link when opening the next for download. I am unaware of any issues within my environment. Is this a safe and needed add-on? Also on Youtube I receive the white blue-edged pop-up that says click to start blocking ads, when it is the only intruder. I x-it out and it pops up every 5 or 10 minutes and appears very generic. Is this a common occurrence, and what does it do? I don't trust either, having no knowledge of the derivative, and unsure how to manipulate a search giving me professional advice. Thank you.