Yet another scholarly gap-filler

As noted here a few days ago, First Impressions from the Michigan Law Review purports to "fill the gap between the blogosphere and the traditional law review article."  I called this entity an interesting variation on the Harvard Law Review's Forum and the Yale Law Jounal's Pocket Part, and I wondered if other like projects are in the works elsewhere. 

Now I see that the University of Pennsylvania Law Review is getting in on the act with PENnumbra, which apparently seeks to "unit[e] the public and the legal academy."  Hmm.... whatever gap there was in short-form scholarship is sure getting filled up fast.  I have an inkling that other such blog-journal synergies may be on the way, and now I wonder if the long-form law review may be really starting to show its age.