Mark Willis pitches some interesting solutions to common problems. The hiccup in signal continuity for when the iPhone decides to transition from a dwindling wi-fi signal to 3G drives me nuts as well. I don’t think Apple would ever go with Mark’s idea of having a setting pane that allowed the user to tell the iPhone that if wi-fi signal is less than, say, 75% strong to drop it and switch to 3G instead. But I do like the concept.