Is this blog active? I think so. I don't post very often - but I do post.
According to Kevin Burton an active blog has one post a day. Anything else and the blog isn't active. His claim comes in his attempt to debunk Technorati's claims that there are 50million blogs on the net.
I agree with Kevin, there's a lot of hype about blogs right now and a lot of numbers that don't make sense. There are a lot of holes in people's maths. I just happen to think that his own maths are wrong. His pessimistic numbers have a post of once per week - which this blog does not do. When I travel I don't think any of my blogs fail to have one post per week.