Perhaps my advanced age is showing here although I hadn't previously considered myself a technology "curmudgeon!"
I've not been a blog searcher to date, and I'm not sure if I'll be doing a lot more of it other than to locate information for specific tasks. It was sort of fun to explore Technorati and Google Blog Search. I've decided that my personal preferences for blog searching include a no-nonsense, familiar interface that allows me to find information quickly. Therefore, my vote is for Google over Technorati. In addition to the comfortable familiarity of Google, I liked its lack of advertising.