An interesting question in the age of "blogging"

While there are blogs for the purpose of commenting on political and social events, I've noticed that my posts are often about myself and what I'm up to. Since blogs are often a sort of "public diary" do they count as "communication." Let me be more specific: when I say "communication" I mean of the type that happens between friends. So, if someone has my blog address and I post about what's going on in my life (and don't call, email, IM, etc.) can I consider myself "in touch" with my friends? While a blog does have the ability to allow comments, my thought is no. However, I'm interested in hearing the thoughts of some of my more "techno-savvy" friends.