I tend not to blog first about my agency's clients like Popular Telephony and prefer to draw attention to other bloggers.
Ken Camp has started his reflective look at the new Peerio Biz platform as has Tom Keating. So too did Keating's sidekick, Greg Galitzine, the Editor of Internet Telephony Magazine.
There are a few more bloggers I know who are working on posts. Basiscally Popular Telephony has eliminated the TCO (total cost of ownership) of a PBX by doing away with the server aspect of it, and putting all the technology in the endpoints.