W3C_annual_most_used_survey.../README.md

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SOURCES
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This blocklist is based on surveys of most used advertising and tracking technology (e.g. surveys of W3C, W3Tech and the
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on-line marketing community itself). The online advertising industry likes to keep lists of top performing companies in
the ad supply chain (including advertising excanhe platforms). The list and surveys monitored are oriented on Europe and
North America, this is the reason this blocklist contains mostly EU and US based advertising and tracking networks.
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WHY USE A SMALL ADVERTISING AND TRACKING NETWORKS BLOCK LIST?
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In advertising the number one (Google) has a marketshare of around 40 percent, Facebook the number two hits the 20 percent mark
while the number three Comscore just has a little over 2.5% marketshare. For comparison Amazon with its huge webstore generates
about the same advertising traffic on its own website. Number 100 on this list is probably used at 5000 websites of the Alexa
Top 300.000 websites, while number 250 may only track you on 500 websites of the Alexa Top 300.000.
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LOW UPDATE FREQUENCY
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Because this list focusses on the advertising and tracking networks which place the adds on the websites you visit, this list
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is not subjective to a lot of changes. Simply because it takes a lot of time and money to build such a backbone (ad serving)
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network. Also the digital marketeers using these networks are a constraining factor, because most don't like to learn how to
use the software (used for advertisement placement and visitor tracking).
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ADVICED USAGE
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To prevent website breakage it is adviced to add the below allowlists also:
https://raw.githubusercontent.com/easylist/easylist/master/easylist/easylist_allowlist.txt
https://raw.githubusercontent.com/easylist/easylist/master/easyprivacy/easyprivacy_allowlist.txt
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Add Adguard's excellent URL Tracking filter to remove tracking prarameters from links
https://raw.githubusercontent.com/AdguardTeam/FiltersRegistry/master/filters/filter_17_TrackParam/filter.txt
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ERRORS & ISSUES
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Feel free to use it and provide feedback on errors, I will try to correct website breakage as soon as possible.