I wholehearted agree with Susan Elberger, and with Greg a bit as well.
In general, at regular open dances I announce dance names and authors just
before I begin the walk-through. It is my acknowledgement, in lieu of a license
fee, to the person whose creativity I am taking advantage of by calling their
dance. I tend not to announce my own name, as I feel uncomfortable even
bragging a little bit.
At one night stands, I do not announce names or composers because in that
setting I want to make every syllable count, and I want the music to start as
soon as possible.
So that's what I do. Inconsistent? Yeah. Reasoned? Who knows...
Dan