Dean's World has some good advice on avoiding blogger burnout. Especially true is his first point:
Write about whatever you want to write about, whenever you want to write about it, for whatever reason you want to write about it. Period. No exceptions.I tend to write about a lot of random stuff. Sure a lot is politics, with technology developments being a close second but, as a quick scan of my blog will reveal there is plenty of random stuff as well. I tend to enjoy posting all those stupid quizzes for example.