It’s right that spamming can be a huge problem. But you can prevent your site from being spammed by following several solutions such as giving the visitor a captcha field to fill in order to verify if he is human. Or by blocking the IP of the spammer with php if you know their IP. Today I will show you how to get started with reCAPTCHA. “reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows. Check out our paper in Science about it”.
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