Perhaps the Android apps forum would be a more appropriate place to ask this?
If you want everyone to use the same list, just make a company account with things like producteev and downlaod Astrid and sync the two.
If you want to go a bit more in depth, Producteev also ahs this thing where everyone gets their own account and people can assign tasks to each other. THat may be more or less useful--I have not used it. I just use the free version (i.e. on account like above).
-Nkk