IPv6 is fabulous and wonderful and I'm looking forward to the day when we have enough IP addresses to proffer DHCP to all my light bulbs and my half empty box of Wheat Thins can call Albertson's and order more of themselves...but, wow...I really hope from the user's (my mom, for example) point of view that the transition is seemless...Apparently there's lots of problems with the plethora of IPv6toIPv4 services installed by 3Degrees.
Secondarily, I wanted to mention, now that I'm 29...I've relaized I'm not 25. I'm not even 27. I'm sure in the heck not 21. As much as I'd like to think I'm a "dude," I'm not. I've been a "sir" at Blockbuster for at least the last three years. At the club, I'm the old guy at the club. Not too old, just a little too old to be at the club. That said, hip teenagers can spot "not-hip old guys" a MILE AWAY, and no sprinkling of quasi-demi-semi-half-hip words like "lowdown" and "fo' sheezy" will get kids flocking to ThreeDegrees. You just can't market hip. If they smell an old guy (anyone >= 25) trying to market to them teens will bail.
That said, I'm watching the whole ThreeDegrees deal with rapt attention. Check out Yoz's take on ThreeDegrees.