This are JavaScript frameworks considered for Denigma with particular order:
KnockoutJS
BackboneJS
Cappucino
Ember.Js
Sammy.JS
Spine.JS
JavascriptMVC
Additionally there is also: JQuery, Dojo toolkit, Mootools, and ExtJs
For instance something like a star comment rating would be suitable for medias.
Explore how to integrate one of those into Denigma.