It is a bit of a bait and switch, you don't let people know that you think it is a "damn good tool" until towards the end. I'm ultimately neutral on this. It sort of works to keep your audience engaged with your writing, but is a bit of a cheap trick to not put all your cards on the table until the end of the article.

Oh, and when you are writing you are almost always writing for an audience -- esp. when you tweet the result right afterwards and show up on Hacker News to discuss it.