Social Media Management Plug-in Ideas

We are looking to build something similar to the following site http://www.picitlist.com – which would provide a social media dashboard for all the popular channels in a Pinterst style interface – we have looked at “Juicer” plug-in it does pull in social media posts to a place to display on your website. Giving the user a place on their website to aggregate their social media pieces. But I was looking for a solution to simplify and consolidate many of the common marketing pieces (lead gen, email, social media posts, micro blogs, website if they don’t have one or wall if they do in all in one site.

What in the WPMU arsenal could be used to aggregate some of these functions?