I think it is a very useful app, even if I only thought it was necessary to have on my phone so that third party apps could tether a laptop to my carrier. I have bought the two best apps for this out there, WiFiRouter (good for any connection type to any other connection type internet sharing) & WalkingHotSpot (the EASYEST of the two to connect to by wifi only), and they both rock! For some reason I couldn't get the stock ICS to work right away with playing with it a few times for about 10 min. so I gave up on that and got these great apps.
After reading this thread I will try the "easy" usb hookup again and see if it works for me this time. If it did before I never would have bothered buying the other apps. Oh well, iTouch users can now come BEGGING me for a hotspot to get WiFi through my 3G to WiFi access point ability. Muwahaha! lol.
Fully mobile connected options like this are AWESOME, if only to know you have the potential to be able to use it one day when you might need it somewhere!
Thumbs up for me all the way

Gem