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UpDownUpDown provides two template tags for adding up/down voting for any post or comment. Anonymous guest visitors can either be allowed to vote (tracked by ip address) or be denied voting and shown a view-only vote count badge. Votes are registered on the server without refreshing the page.

Fork the Github repo: https://github.com/davekonopka/updownupdown

This plugin was initially developed as a project of Wharton Research Data Services.