These advertisers have simply overwhelmed and saturated the user experience of so many web properties to the point where they aren't tolerable. Try to going to any wikia.com site without adblock and see how slowly it loads and how impossible it is use the site. Frankly, slashdot is among the worst offenders.
I just visited halo.wikia.com and ABP reported 25 blocked adverts. It's pretty much out of control.
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