Interesting idea. I’ve been using 1Password for a while now, thanks to nudges from Paul (@ppedrazzi) and Rich (@rmanalan), but one danger is using that strong, random, automatically-generated passwords means I’ve no idea what my Facebook or Google password is.
Therefore, I’m at the mercy of 1P’s clients and its database.
The idea of using lat-long coordinates as the password, as entered by a map is highly intriguing. I’d feel much more secure with that system.