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So I've been playing around with my Ghostery to figure out what I can block for performance without Actually Blocking Ads.
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Been trying it out over a whole bunch of sites and it is sort of shocking how few companies are needed on a page to contributing to such immense performance problems.
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eXelate and Datalogix tracking codes take up ~25% of my CPU, each. So two metrics companies, one owned by Nielson and one owned by Oracle, apparently need a collective 50% of the processing time on a 3.1Ghz MacBook Pro to ... tell them I exist on a webpage?
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Like... both of these companies are just consumer data collection as far as I can tell? So one hit to get my data, one hit to potentially push my data to an ad, and one hit when I take an action to indicate some sort of preference?
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Like... wtf are they doing that needs that much CPU? Is it just you can't write working Javascript? I bet it is just you can't write working javascript.
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I think the most telling thing about these 'tracking' companies is that if you go to their sites, they mostly don't run their own tech on their own websites. They know it's awful and don't want potential clients to have a bad experience!
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The best engineering tip I ever got was: don't trust a tech company that doesn't eat its own dogfood. If they can't be bothered to use their own product, why would they care about how well it works for you?