Adds Secure Image CAPTCHA anti-spam to WordPress
https://wordpress.org/plugins/si-captcha-for-wordpress/
Widgets · CAPTCHA · WordPress Plugins
Get access to data on 204,363 websites that are SI CAPTCHA Customers. We know of 53,021 live websites using SI CAPTCHA and an additional 151,342 sites that used SI CAPTCHA historically and 16,278 websites in the United States.
Get a list of 204,363 websites using SI CAPTCHA which includes location information, hosting data, contact details, 53,021 currently live websites and an additional 31,688 domains that redirect to sites in this list. 151,342 sites that used this technology previously and 16,278 websites in the United States currently using SI CAPTCHA.
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