I agree. The biggest difference that came to mind when I read your comment is that a personal wiki doesn't have the economy of scale that Wikipedia has. With Wikipedia, the effort of hundreds to organize everything can benefit millions. With a personal wiki, the dynamic is different. I 100% agree that there's a real risk of a 'honeymoon period' giving a false sense of ROI, and I've fallen victim to early enthusiasm about various organizations strategies that ended up not lasting more than a month. I've resorted to a to-do list and a chronological work log as mechanisms that require little organizational investment but yield many of the benefits of a more sophisticated system.