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Re: [tor-talk] ads slow Tor Browser dramatically



On 11/6/2012 4:44 PM, Mike Perry wrote:

I am deeply opposed to shipping an always-on universal adblocker with
the default TBB. I think it would be political suicide in terms of
accomplishing our goals with acceptance of Tor users by sites, lobbying
for private browsing origin changes, and convincing the world that
privacy by design is possible without resorting to filtering schemes
and/or DNT-style begging.
Thanks Mike. I'd probably agree w/ that & was aware of that potential issue. The ad servers don't care if their ads are delivered to an anonymous user, as long as they're delivered. But individually, many users don't want them - for the reasons you stated & speed issue. Unfortunately, some sites have such large, pop up, flashing ads, you can't see the page. And some are very persistent.
Sometimes, even respected sites have them on "special" occasions.

Regardless of political issues, I stand by my statement that *some* pages have too many / too large of ads, causing TBB to time out, at times. I suppose the time out period could be adjusted. But, it's a long time to wait. Political & finger printing issues aside, same pages w/ ads blocked usually load much quicker. I never said it'd be an easy or good decision, but I suspect the extra load on Tor network from ads is much larger than most would think. If pages in TBB or Fx often take 3 - 5 sec longer to load, that's substantial.
Further, adblocker filter choices are fingerprintable.
I'm only using AdBlock as an example. But in reality, if 90% of all TBB - English users had [something like] AdBlock & they all used [something like] either "Easy List" or "Fanboy's List," how easy would it be to fingerprint one among all TBB - English users?
I'd guess it'd be more of a problem for small groups of other languages.

(though safebrowsing filters are supposed to exist for this
last reason and we do use those).
Which safe browsing filters are those? Not Google's? Because they're disabled in TBB (fine w/ me). NoScript?
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