Digital Signage Talk and Digital Signage Place talk about the same study, analyze it differently, but come to the same conclusion.  

The basic deal is that, not surprisingly, people use TiVo and other DVR's to skip commercials.  This Jupiter study supposedly says 50% skip commercials.  I've read somewhere else that 70% skip commercials.

Digital Signage Talk jumps on Jupiter for coming up with a "solution" to this problem which says that networks and advertisers should "develop strategies" that work with DVR's.  I don't know exactly what those would be except to stuff TV shows full of product placements.

Digital Signage Place is pretty nice to Jupiter, but points out how advertisers are pretty dumb to keep on spending money where it doesn't work.

The conclusion of each blog is the same.  Digital signage is where it's all happening.