Analysts have been predicting Zigbee to take the automation (home and industrial) world by storm for nearly 4 years now. I think it may be failing because it has a hard time dealing with RF interference - it's a low power DSSS radio in a world of high power WiFi and FHSS radios.
Hopefully the next-gen wireless standards like ISA-SP100 will make this a reality.
Everybody may be blogging, but very few blogs are actually worth reading - many are just regurgitation.
I think it comes down to: Do you have something original and substantive to say? If you do, then blogging is a great forum for it. If not, then you'll be lost in the noise and it won't help.
Hopefully the next-gen wireless standards like ISA-SP100 will make this a reality.