Against the many Fake registrations in Joomla the use of a Captchas helps with the Registration. These chop extends the Joomla core files with reCAPTCHA. So that a registration is only possible, if the Sicherheitscode were entered. Additionally one helps to digitize with this Captcha method old books.
Zur installation please readme.txt contained in the download read.
Dowload Link:
http://www.live-share.com/files/374544/recaptcha_1.2.zip.html
