title: Android GCM: same sender id for more application
body: <p>Is it possible to use same sender id for more applications? Now I have 18 application (different language and some functionality) which use same backend. Now I am implementing push notifications with GCM. But backend team preffer to have only one google project - SENDER ID for all applications. 
  Did anyone try it? Is this scenario possible? What are the drawbacks?</p>
  
  <p>Thanks</p>