Links in email to ideas result in "Idea Not Found"
If you get an email because someone commented on an idea you posted to the community, the contained link pointing to the comment will give an error message "Idea Not Found. The idea you are trying to access is not available.", if you are not logged in.
I suggest to change the message to something more correct/obvious, so the users knows the idea is there, but that he has to login to access it.