Can you list a "last-minute" invited talk on your CV? A session at an annual professional society meeting that I regularly help to organize includes an "invited" talk to anchor the session. Some years, the invited speaker is unable to attend the meeting (due to illness, travel problems, etc.). If we are able to arrange a last-minute substitute speaker to fill the time slot (rather than canceling it and risking losing the audience to other parallel sessions), would that speaker be able to list the talk as an "invited" talk on her CV, even though it's not been advertised or listed anywhere?
Why not? Of all the possible people to give the (new) talk, you invited that person, and even trusted them to give a good talk on short notice!