There's an interesting new report from the Pew Internet & American Life Project  out on wireless Internet access. A synopsis:
"Some 34% of internet users have logged onto the internet using a wireless connection either around the house, at their workplace, or some place else. In other words, one-third of internet users, either with a laptop computer, a handheld personal digital assistant (PDA), or cell phone, have surfed the internet or checked email using means such as WiFi broadband or cell phone networks...Users of wireless access show deeper engagement with cyberspace – at least when focusing on two basic online activities, email and news."
Read the full report here  (in PDF).