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How Long it Took for Popular Apps to Reach 100 Million Users
(www.visualcapitalist.com)
This is a most excellent place for technology news and articles.
This graph has some scale issues; 5 days and 2 months look basically the same and the difference between 5 years and 7 years is also minimal. They would have been better off dropping the "World Wide Web" which doesn't fit anyway since it isn't an app and giving more space to everything else.