I can quickly and easily skim through the new comments in this Space

(User Story, To be Fixed , Priority: Medium, Test Status: No automated tests yet , Reported By Justin du Coeur, )
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Summary: This is a key feature of both CommYou and Wave, and while the UI might differ a bit, the core principle should remain the same: I can, eg, just keep hitting spacebar and quickly skim through everything that is new.
This might be more expansive than just new comments -- it might want to include new and changed Things as well. That will ultimately have to be a user preference.