Blue Captcha is a powerful and customized captcha plugin that protects your WordPress site from unwanted spams and persons. The plugin is easy to setup and activate high protection against spammers, bots etc.
You can keep full post, page or a few lines visible only to your registered site users whereas display a Login to Readmore link for other site visitors.
[auth]This content will display for registered users only[/auth]
How it works ?
Text enclosed in shortcode tags shows up a login to readmore button to non-logged in users of your website. The button link directs them to wp-login page and if they are registered site users they can simply login and the plugin will redirect them to the content they were trying to read.
Arguments & Filters: The plugin provides you few parameters and filter hooks, visit its WordPress plugin page for more information.
zM Ajax Login & Register, is new WordPress plugin with which you can easily create a custom login and registration forms and display them using the shortcodes
[ajax_register] or you can use modal boxes in the “Advanced Usage” settings. Install and activate it, after activation visit Dashboard -> Settings -> AJAX Login & Register page and select your options.
Sometime people create multiple fake accounts in your WordPress site like they do in Facebook. You can fight back by logging their IP addresses and this can be done easily by using Register IP plugin in your site.