Hack the MIX Hackathon

I've noticed some sites and services adding unique methods for highlighting portions of a post to share via social networks. For example, the new service Branch has great highlighting as done a couple times in this thread: http://branch.com/b/hr-matters-google-is-great-to-work-for?ref=sidebar#Q... It would be great to have a similar highlighting feature in the Mix not just so that I can share with others, but also to store in my profile or somewhere where I might be able to look at them later. Perhaps it can be either for a selected portion of a post, or the whole post altogether.