This is the third part in an excellent series about outliner applications on the Mac on ["About This Particular Macintosh(AtPM)":http://www.atpm.com]. I've always had problems remaining faithful to one outliner, as none of them seem to do everything I want them to. As a consequence, I've got more outliner-type things on my Mac than you can waggle a mouse at.
I can think of many software reviewers (and for that matter, manual writers) who could learn a lot from AtPM: rather then telling you what the software does, they focus on what you might want to use it for. It seems to me that this is much more valuable than telling you how something works, which--if the application is reasonably well designed--should be fairly self-explanatory with a little exploration.