Kick the tires, check the odometer—wave your Timmy the Tooth magnet around? Our Australian counterpart gets a tip that having a refrigerator magnet handy when inspecting a used car reveals the truth about a car's history.

One of the biggest gripes about aftermarket GPS navigation systems is that there are simply too many choices. Seriously, do you really need to release a new model because it has microSD expandability rather than mere SD? Cut out the gadget diarrhea already. Enter Navigadget, performing a valuable service by breaking…