<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>snowwrestler</author><text>&amp;gt; Only about 9% of Safari users on an iPhone allow outside companies to track where they go on the web&lt;p&gt;&amp;gt; In comparison, 79% of people who use Google’s Chrome browser allow advertisers to track their browsing habits on mobile devices through cookies.&lt;p&gt;Something to keep in mind the next time you see someone from Google complaining about how Apple won’t allow Google Chrome to run natively on the iPhone.</text><parent_chain></parent_chain></comment><story><title>Apple’s Ad-Targeting Crackdown Shakes Up Ad Market</title><url>https://www.theinformation.com/articles/apples-ad-targeting-crackdown-shakes-up-ad-market?pu=hackernews4qs3ac&amp;utm_source=hackernews&amp;utm_medium=unlocka</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>faizanbhat</author><text>As someone who worked in ad tech for half a decade, I fail to understand the fuss about cookie based targeting. We&amp;#x27;re speaking of databases mapping data to random numbers stored in a file that can easily be deleted. The real issue is ad targeting by a handful of large companies that have personally identifiable information.&lt;p&gt;It&amp;#x27;s not like cookie based targeting is very effective either. It&amp;#x27;s very difficult to get cookie based ad targeting right – you have to make significant investments into product, technical integrations and data buys. Given the fact that the cookies to which you are tying these investments can vanish at any time (and a large % do so regularly), it rarely makes business sense to make the right sort of investments. Instead most companies do the bare minimum and try to make a guess that is slightly better than a coin flip. I actually remember seeing a deck from a data company boasting how their gender data was ~ 60% accurate.&lt;p&gt;Why are we worried about this? Contextual targeting is far more effective. As an example, targeting an ad on Elle.com is more than 60% likely to reach women than an ad targeted based   on cookie data.&lt;p&gt;Genuinely curious so would appreciate calm, non-aggressive responses. I&amp;#x27;m wondering whether this is due to a generally poor understanding of cookie targeting effectiveness or if I&amp;#x27;m missing something.</text><parent_chain></parent_chain></comment><story><title>Apple’s Ad-Targeting Crackdown Shakes Up Ad Market</title><url>https://www.theinformation.com/articles/apples-ad-targeting-crackdown-shakes-up-ad-market?pu=hackernews4qs3ac&amp;utm_source=hackernews&amp;utm_medium=unlocka</url></story>