Bypass AT&T with $1 iPhone App!

I knew about about 9 months ago. I read about online. Use an iPod Touch as a phone over Wi-Fi! Fantastic! Sure then I suppose the 'ol iPad will work as well. Hmmm, very interesting...I do not have to be tied into AT&T's iPhone money making calling/internet plan!? Yeah! In other phone news. The Google Nexus One is pretty cool, as is my personal favorite Verizon Wireless's HTC Droid.