My “Demo” Are Fans of Firefox?

I’ve noticed for several months now that the majority of people who view this blog are using Firefox (some 64% yesterday).  It varies daily…sometimes it’s 30% sometimes 70%, but almost always it is more than IE.  Now admittedly the number of users who visit this blog are small in the global scheme of things, but what I find curious is that they appear to be big fans of Firefox (which apparently has a sub-10% market share).  Anyone have an explanation?