Got pitched on a couple of iPhone apps while down in Austin. One pitched me with a “Got an iPhone? Come inside and get a $15 iTunes gift card” spiel as I walked to the convention center. I had 20 minutes to kill so I said sure. I entered their venue (which probably cost a ton to rent) and downloaded the iPhone app. Then I had to use it once in front of ‘em. Then they gave me the gift card. Then I exited the building. Then I walked three steps and deleted the app from my phone.
The other one was an app at the trade show portion of the event that included some sort of location/geo/something-or-other. The woman demoing the app showed me how, using this app, she could pinpoint the location of Andrew, one of the app’s developers. (Andrew was standing right next to her.) Then she started using the iPhone to figure out his location. When it worked, she proudly showed me that her iPhone had spotted Andrew. I commented that this certainly was a great way to determine the location of someone who is standing right next to you.