Blog to it is a UK based start up allowing bloggers to share their posts. The site allows users to add an RSS feed from their site, using FeedAPI the feeds are pulled in and added to that user's blog using the core Blog module and the DrupalMU install profile. All posts can be voted on using VotingAPI and Plus1 modules. Take a look, sign up, add your blog, and get voting. http://blog.to.it