In the documentation, it says...

"Treat the token returned by create_channel() as a secret. If a
malicious application gains access to the token, it could listen to
messages sent along the channel you are using."[1]

and then the following section proceeds to say...

"Only one client at a time can connect to a channel using a given
Client ID, so an application cannot use a Client ID for fan-out. In
other words, it's not possible to create a central Client ID for
connections to multiple clients (For example, you can't create a
Client ID for something like a "global-high-scores" channel and use it
to broadcast to multiple game clients.)"[2]


If someone else gets the token so it can also "listen" to the messages
being sent along the channel, what is stopping me from *legitimately*
giving the same token to multiple users so they can all "listen" to
the same channel?

Thanks!

1 
http://code.google.com/appengine/docs/python/channel/overview.html#Tokens_and_Security
2 http://code.google.com/appengine/docs/python/channel/overview.html#Caveats

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