A couple of exhibitors I spoke to on the show floor here at Macworld Expo told me that booth traffic was down "about 20 percent" over last year. Some were higher or lower but a couple said 20 percent was a good number. Some exhibitors selling products directly on the show floor told me that there were "lulls" throughout the day where there was no traffic. In previous years the exhibitors that I spoke to saw a steady flow of customers from open until close. Most were optimistic about the future of the show though, saying that they'd most likely exhibit again next year.