Which authors should be listed in a conference presentation? I asked a poorly-worded question previously, so I'll try again.
Suppose someone is submitting an abstract for a talk that is based on joint work with other researchers. Further suppose that the other co-authors will not be presenting (or even attending the conference). As a matter of attribution, should all authors be listed on the talk?
The practice that I have typically seen is to list all authors, but highlight/bold/underline the name of the speaker.  That way, credit is given both for speaking and for production of the material being spoken about.