Whenever I'm working in a bookstore, I become much more interested in the hot writers in genres I don't normally read much. So in addition to all the trivia books, and comics, I'll have these bursts of reading business, and cooking, and gardening. I could say that I do it to keep myself well informed, but it's really more that I'm nosy. That which is popular interests me, because what if all those other people are into something really cool and I'm missing it? Also, I have the attention span of a squirrel in fall, when I am keenly aware that I will not be able to afford to sell books for very long before getting a real job, and I have to store up titles in my brain, and everything looks so good, so shiny, and "oh, so red."
So, Naisbitt was extremely popular for a number of years, predicting the future for MBAs. I don't remember learning anything earth-shattering from any of these books, nor from other writers of the same ilk, like Faith Popcorn (is that an awesome name, or what?) or Malcolm Gladwell. On the plus side, they're usually pretty zippy, with some amusing anecdotes, and a nice, clear, bold thesis. Someone could go back and look at them and see if they stand the test of time. My guess is they are as permanent in their wisdom as your average inspirational poster (albeit, not the ones with cats though, because everyone loves cats with captions). Probably they retire from their public speaking gigs and write fortune cookie platitudes for a company in New jersey, just to keep their hands in.