Thanks for your input, and for your time with this issue and with EasyList in general.
I understand that you are not seeing the ads on newser.com. However, that does not mean that others don't see them. kefierschild, above, has stated that he sees a floating banner on newser.com in Windows, though I do not know his system setup. I see them in OS X and in Ubuntu Linux.
I have checked my systems extensively, and, as far as is possible to know, I do not have any adware installed on them. I do not install any ad-supported programs, and I only install known, trustable software from known, trustable sources. I do not have MacKeeper installed on my computers, and I've known about that mess of a program for many years and would never install it or any software like it. Besides, why would MacKeeper keep advertising for itself if I already had it installed (no sarcasm intended)? And, to my knowledge, MacKeeper and the various advertising engines out there cannot be installed in linux.
At the moment, the MacBook Air I am typing this on only has installed on it Apple software, Firefox (d/l'd from Mozilla), and f.lux (d/l'd from the developer). The MacBook Pro I've checked Newser.com with, additionally, has Google Chrome (direct from Google) on it. Only well-known, trusted, ad-free extensions have been installed in the browsers, and during testing of this issue, only Adblock Plus is active. The linux install I've tested with is installed on a flash drive and cannot modify itself on the drive. I have to install ABP fresh each time I use it.
The screenshots below are from newser.com today, in OS X and the current Ubuntu linux distro. ABP and filters are up-do-date, the following running: EasyList, Malware Domains, Fanboy's Social Blocking List, EasyPrivacy, and "Allow some non-intrusive advertising unticked" (thus, blocked). Looking closely at the OS X screenshot, Adblock Plus has even blocked 4 elements on the adsupplyads.com page-under, but did not block the page-under itself.
Bear in mind when checking newser.com, the page-unders and floating banners do not necessarily re-appear once they've displayed, unless site preferences are cleared and the site is browsed some more.