In fact, "Open With" can be an extremely useful function as it definitely works seemlessly with the following apps:
Google Maps
Google Street View
Google Earth
OSMAND+
TomTom Go Mobile
...and probably many others!
So, for example, if you have prepared a set of landmarks of places you want to visit on holiday, you can quickly select one off the AQ map and then target that location directly within, say, TomTom for driving instructions. No need to spend ages duplicating effort in TomTom as AQ passes it all the info it needs. Brilliant

To be quite honest, although I was expecting the cross app navigation info passing to work with Google Maps, Earth and OSMAND+, it was quite a revalation to find that it works in TomTom Go Mobile v1.11 as well.
Perhaps this lesser known feature of AQ could do with a bit of a "promotion" ... I'm doing my bit here
