Captcha
A captcha is usually a picture with a group of letters or numbers for a human website visitor to read and enter as a password before the user is allowed to submit content to the website.
The purpose of a captcha is to prevent automated submissions of content to websites, which can lead to huge amounts of spam. The software programs that deliver automated submissions cannot read captcha pictures. Only a human being can read the captcha and submit content. This reduces spam. Sometimes a captcha is a simple math question that the user must answer. And the answer is the code that allows the user to post content to the website.
Captchas are used to prevent spam in blog comments, contact forms, and on directory listing websites where users submit content to be displayed on websites.
Author: Kris Tabetando
Kris Tabetando provides mergers & acquisitions (M&A) advisory and brokerage services to Internet companies. He also partners with investors to acquire & manage Internet businesses.
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