by Dinar Qurbanov on WordPress.org
antispam question for signup and comment forms of wordpress, set by admin, supports Multisite mode
[improve your website security] Removes the ability for non admin users to reset/lost password remover/ their passwords option.
Prevent people from registering with emails that contain a subdomain to help reduce spam.
Simple sharing plugin. Easily add Facebook, Twitter, and Google+ share button to your content.