Ultima tema aparuta ar fi: Katla - User Generated Content Theme - WordPress | ThemeForest

Ai putea realiza asta si gratuit, cu o tema de blogging din directorul wp si 2-3 pluginuri:
https://ro.wordpress.org/plugins/wp-user-frontend/ (are si o versiune premium)
https://ro.wordpress.org/plugins/theme-my-login/
https://wordpress.org/plugins/wordpress-social-login/