There look to be several good suggestions of blogging platforms for programmers on the StackExchange network. I was happy to see WordPress high on the list, which I’ve already invested some time to learn.
However, I like using Git to version documents, and I like Markdown, so Jekyll hosted for free on GitHub seems ideal. I might do a few posts on both WordPress and Jekyll to evaluate.
Google+ is totally unsuitable as a programming blog (cannot format code snippets), but perhaps is a good way to aggregate content from both blogs?
Speaking of aggregation, I also set up an about.me profile to keep track of the sites I produce content in.