I've seen this happen to a handful of the bloggers I read: they'd been going strong for a year or two, then suddenly seem to fade. Posts go from twice a week, to once a week, to every few months, then stop. And I have the sense it's happening to me.
I'd like to blame the accident I was in - though the injuries weren't that serious, I was bedridden for a month or so, and I still feel a complete lack of energy and motivation to do anything at all, including this. But I don't know if that's the cause, or just coincidence.
I'd like to say that I'll muster the resolve to get back in the swing of things - but I've seen those posts, too, on the blogs that I follow that have also faded. There's the realization that "I'm not posting as often," followed by the resolution that "I'm going to get back to it real soon," then nothing. I hope it doesn't go that way for me as well, but then, that was probably their hope as well.
It's not that I'm using the example of others to justify my own actions, just that I recognize this is not unusual, and as much as I hope to avoid falling into the same pattern, I have a sense I just might.