This is probably the closest thing I have to a blog, but I publish infrequently enough that they should more be considered papers and articles about programming and computer science.
Debugging, Documenting and Testing Haskell Programs
This article is a short piece advocating the use of Haskell based on the strength of its testing, debugging and documentation tools. It is based on a presentation I did in 2009 as a talk at Google, the slides of which you can still view here.