Why so pessimistic? Maybe when writing a blog you won't get more than a handful regular readers, but keeping it public stimulates you to talk about you, your job, and the solutions you got when encountered a problem (sure, you won't talk about how much you love your dog, I hope).

I'd also say that a well kept blog may be more important than a CV since you can actually tell how good you are in your job.

To answer the question: I used to blog with pelican, and now hugo.