Personally I like the name -- both because it accurately describes the subject and motivation for your blog and because of the catchy half-rhyme / assonance created between "-piric" and "spirit".

However, I wonder what percentage of the general population is actually familiar with the words "empiric" and "empirical". You do risk losing a percentage of your audience if the name of your website turns out to be unintelligible to them. And, unfortunately, I'd expect that to be the case.

I'm not suggesting that you avoid words such as "empiric" within your blog articles. For there readers who perhaps aren't acquainted with the word will be aided by the context. However, with a name, there is no context. And a name, if partially forgotten, acts as a deterrent against word-of-mouth growth.