WP-Polls (with CubePoints) is a modified version of WP-Polls by Lester ‘GaMerZ’ Chan which works with the CubePoints Plugin.
CubePoints is a point management system designed for WordPress blogs while WP-Polls is a plugin that allow users to create polls.
WP-Polls (with CubePoints) bridges these two plugins to allow registered users to earn points by voting in a poll.
The CubePoints Plugin is required for this plugin to work.
Development Blog
Te puedes descargar este plugin para utilizarlo en tu instalación autoalojada de WordPress.