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A comment on Ask HN: Which is the most successful one-person business you heard of in 2019?. Parent comment

Re:Ask HN: Which is the most successful one-person business ... by thepredestrian on Tuesday December 31, 2019 @04:26AM (#21919900)
What kind of site do you run that generates $1.5k/month in ad revenue? High traffic niche blog?
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Re:Ask HN: Which is the most successful one-person business ... by stanmancan on Tuesday December 31, 2019 @06:26PM (#21925514)
One of many MAC address lookup services, https://macvendors.com
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