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 185,833 websites that are SI CAPTCHA Customers. We know of 34,654 live websites using SI CAPTCHA and an additional 151,179 sites that used SI CAPTCHA historically and 9,889 websites in the United States.
Get a list of 185,833 websites using SI CAPTCHA which includes location information, hosting data, contact details, 34,654 currently live websites and an additional 18,527 domains that redirect to sites in this list. 151,179 sites that used this technology previouslyand 9,889 websites in the United States currently using SI CAPTCHA.
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