Sad to see users quitting this app, however it's quite understandable. I haven't touched Cartouche for a few weeks because it became annoyingly unusable and there surely was no way of communicating the issues from Waze.
As for the Android app, it just seems like the dirty little stepchild of the iPhone app... No beta version coming soon, no real issues fixed like the always annoying phone freeze. Who cares about e.g. FB integration if the application freezes
a) just from running
b) when connected to the power plug in the car
c) when put into the car mount
d) just by starting it
Especially with the free Android environment where you can install freely without the market and have total access to the data on the sd card, I'm sure a lot of users are willing to try a new beta or alpha to help improve the software. So far I only remember one beta version and one survey. That was a good sign but nothing came after this...
I don't mind when an alpha version crashes, but come one, it's version 1.9 from the market and even this has issues. Have you ever tried to user your finger and scroll the map? No? Better not do so as the app will freeze the phone. If you use the few seconds you have to kill the app with a task manager you will still have to reboot your phone, as at least on my MS the sd card became unreadable (and yes, I've tried a few)
Why not offer nightly builds, at least then you get some log files with progress and not the same errors over and over again.
If you want this to be a community based service, just let the community help you.