An interesting claim.

"A small change in the way we work could shave 45 minutes off of the average workday.  That small change is to use a news aggregator to get news instead of gathering it by hand."  - John Robb via Jeff Cheney: Radio. 

It might even be true; it feels true.

There are two problems.

We need proof.

Some evidence will come from learning more about klogging behavior. Combinations of surveys, interviews, and ethnography will help.  Klogging metrics, generated from Radio and Radio Community Servers, will also help calculate payback.

The other problem is thornier.

Time saved gets reappropriated.

We either:

• find something else productive to do
• consider it saved for "non-productive" time (which may be indirectly productive)
• do more of what we were doing before, but faster.

You get to this by observing use before adoption, during adoption, and after.