Topsy Social Modules by topsylabs add realtime social content within your site that is relevant, topical and fresh. Unlike twitter widgets, Topsy’s Influence Engine ensures your site gets top quality content from influencers, thought leaders and people in the know on any given topic. We filter out spam, porn, profanity and ensure you’re getting the best content on the Social Web. Give your website visitors awesome content related to what they are reading and make money from running optional ads within the modules.
More info and download: http://wordpress.org/extend/plugins/topsy-social-modules/