Who is Kristian? Why should I care about his blog?

Good questions. Kristian is the creator of AstLinux (and main maintainer of this site). If you are interested in AstLinux you will probably be interested in a lot of the same things. Kristian writes a lot about AstLinux, Asterisk, VoIP, networking, telephony, the industry, etc in his blog. You might find it to be a good read.