Publishing posts on your blog and signig them on diferent webpages so people can find you and your blog usually causes that spamers finds you as well. There is a simple way to prevent those annoying spams: reCaptcha plugin.

Set it up:

1. Download the plugin: reCaptcha Wordpress plugin
2. Unzip and upload the folder to your plugin folder (usually: /wp-content/plugins/).
3. Activate the plugin.
4. reCAPTCHA requires an API key, consisting of a ‘public’ and a ‘private’ key.
   You can sign up for a free reCAPTCHA key.
5. Go to ‘Options -> reCaptcha’ and enter ‘public’ and a ‘private’ key.

Plugin’s homepage.

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