[ohadpr]

First implementation of CAPTCHA circa 1997

[uptown]

Thanks! I hate it.

[jer0me]

Ironically, there are people here bragging about popular scraping software they wrote back in the day

[schoen]

Though not every use of CAPTCHA intends to prevent or limit scraping -- some sites let you read everything with no CAPTCHA, but apply one if you want to write something (or take an action that affects the outside world somehow).