I did do a search in here for past posts, but the only thing that keeps coming up are articles about the app Hosts Block, which I'm not looking for. I want information on how to manually modify/add entries into the hosts files, and for people here to provide good lists to use. Also, is it worthwhile to block the sites in both the Hosts File & the router? Or just one or the other? And if so, which one? I do have a list of sites I plan on blocking in my router that I gleaned from a thread in here about Win7 Telemetry & other harmful updates.