If you are interested in digital radio, then you will love Eureka!, the e-magazine from World DMB. It is not so frequent as a blog, but it gives you a quick update from the globe. According to the latest issue of the magazine Norway, will be the first country in the world to close down the analog FM broadcast. It seems that Switzerland will be the second. If you look at the GDP per capita, you can claim that this is not a coincidence. According to the World Bank data, the GPD per capita of Norway is 97363 USD, and Switzerland is 87.733 USD.
You can have a look at the Eureka!.