Here are some blog sites which are dedicated to developments in the VoIP and conmmunications industry:
blog sites
http://www.voipnow.org
http://rogerdarlington.co.uk/commswatch/
http://andyabramson.blogs.com
http://pulverblog.pulver.com - Jeff Pulvers blog site
http://www.voipdaily.com
http://www.voip-weblog.com
http://voipandenum.blogspot.com/