Using the Stop Spammers Plugin to Fight Comment Spam
If you have comments enabled in the form of comments on posts on a site, or if you have reviews enabled in WooCommerce, spam can be a major issue. There is a solid and easy-to-use plugin to stop spam on your child site, called Stop Spammers. After you have installed and activated the plugin on your child site, it will add an admin menu called Stop Spammers. The sections that will show under that admin menu are broken down as follows: Summary: This checks to see if there may be problems from your current incoming IP address and displays a