tedster - 4:47 am on Sep 5, 2011 (gmt 0)
Yes, it is obvious and just that simple - and equally unexpected, I would say.
The challenge now is writing code to suppress the *1 button whenever the content is accessed through a non-canonical URL, or on a "sort" or Site Search results page that you don't want indexed... that kind of thing.
Once you know the issue, the code is certainly do-able. But you need to know that there's an issue. I'm quite happy that indyank brought this issue to light.