Excitement when I read this - Wireless USB Devices Coming This Year.
USB has a much higher data transfer rate than Bluetooth, which has largely been used for cellphone headsets and ringtone transfers.
So - potential for a truly wireless world, if it takes off. But there's also the security concern - with the number of unsecured WiFi ports, bluetooth phones etc - I don't think that people consider wireless data security at all. As more data gets transferred wirelessly, there's more and more risk that the data will be intercepted and used in negative ways.