Comment 2 for bug 420353

I wonder what percentage of users really know if their bug is an upstream bug or not. I get the impression that some reporters just click on all available buttons which is why there are so many bugs that get marked as security issues or nominated for all Ubuntu releases. These false links just take time of a triager who will look at the bug in the future.

What is the use case for marking something as affecting upstream but not providing a link?