After a recent announcement from Microsoft committing to building rural networks using TV white spaces [NYT, Ars Technica stories], we asked Public Knowledge Senior Vice President and long-time TVWS enthusiast Harold Feld to explain the significance. We discuss what TVWS are and why this announcement is such a big deal given that we have previously covered multiple deployments of TVWS over the years. In short, Microsoft's commitment can drive TVWS from niche to mainstream. We also discuss why some TV Broadcasters are very opposed to this development and are trying to smear Microsoft. And finally, we explore what kind of bandwidth TVWS may be delivering soon and how the technology could mature. Don't miss Harold's wonderfully sci-fi-reference-packed blog posts at Tales From the Sausage Factory. Read the transcript of the show here.We want your feedback and suggestions for the show-please e-mail us or leave a comment below.This show is 18 minutes long and can be played on this page or via iTunes or the tool of your choice using this feed.You can download this mp3 file directly from here. Listen to other episodes here or view all episodes in our index.Thanks to Arne Huseby for the music. The song is Warm Duck Shuffle and is licensed under a Creative Commons Attribution (3.0) license.