Here is a new one: I have started a tech blog on GitHub: http://alexandrugris.github.io/ :). I will also keep updating this one, as the two blogs have two very different intents behind.
The management blog (www.alexandrugris.ro) is mostly about interesting insights I have from time to time, mostly on topics like management and leadership. I write when I think I have something (hopefully) original to say or, as it happened before, when I stumble upon an interesting managerial challenge which drives me to analyze the situation deeper, to extract a pattern. If I find my conclusions to be interesting enough and applicable to other situations, I put it online.
The technical blog on the other hand will probably be driven by my own play with various technologies. I start it with the idea of having a log where I jot down the stuff I experiment with. I don't expect it to have a unifying theme although, as it seems right now, it might evolve somehow towards distributed systems, software architecture, coding techniques and parallel computing. But that is just because these topics are on my reading list these days.