Even more Maps R Us

[06 August update: upgraded phone contracts to smartphones and used Garmin's Navigon to great effect, especially finding hotels and hotspots in those twisty medieval cities...]

So how does all this web mapping stack up @ home? Meaning: would my wife & daughter actually use it? We have for home use two roaming laptops, one netbook in the kitchen and one tablet for travel, and a deskside in the office to access printer & storage, but no phone with internet contract.