I discovered 43Folders just last week, following (I think) a link on Ben’s site.
Although I’m no big fan of self-improvement books, I’ve found that the advocacy Merlin makes of GTD has mesmerized me. The hard logic and the simple examples have provoked me thought and I have been so intrigued that I’ve already ordered the book (the referral for you, Merlin ;). I’ve already begun to decompose my projects into @nextactions (albeit still on my mental RAM, I don’t want to go too fast yet)
As if that was not enough, the many bits of OS X software reviewed by Merlin increase my desire for owning a Mac. I had already promised myself that the next computer I’d own would be a Mac, even if it has to be a Classic or a Performa. 43Folders is, definitely, food for thought.