Re:Only 90s web developers remember this (2014)
by p2p_astroturf on Sunday November 21, 2021 @12:53PM
(#29298167)
And now today CloudFlare serves you a captcha if they don't like your user-agent and IP address combo.
this probably started in 1997-or 1998 or so, and probably had its apex in the mid 2000s especially with the hegemony of IE5.