I'm going to just jump on the bandwagon and say that 25 impressions is on the "very low" side. It's a good blog + unique content is great. Not posting often can hurt SEO a bit... so I suggest you start working with social networking to rack up some traffic and just see what happens from there.
Sometimes, I'm also earned a Big 'O" for my adsense, although it have over 200 UV per day...Just a normal situation for us.