It probably came from one of you sneaky fuckers, but I'd like to get rid of it nevertheless! Every so often when I go to a site (Craigslist, eBay, other sites) another link will open up along with the place I was trying to go to, and it'll either be to a random site (probably the end result of an ad click) or to a landing page which then brings me to a CPA offer. And also just now, sound started playing on my computer randomly, sounded like a video that would be on a landing page for a clickbank product. I went to the volume mixer panel on my computer and it said the sound was coming from "TCP/IP Command Ping". I am very computer literate and can usually figure these things out, but I am completely stumped. I've done a Malwarebytes scan and still found nothing. Any advice?