Michael Barraclough wrote:
 There is nothing wrong with change - sometimes it
improves what was
originally created.  However I believe that it is good etiquette to announce
the name of the dance and its author to the dancers (before the walkthrough,
after the walkthrough, when the dance ends - take your pick, we could have
another discussion about which is best!) and to announce if you have changed
the dance or to say that this dance is based on .... 
I want to take this opportunity to present another view.
I think there are some good reasons not to announce the name of a 
dance at all.  This has become my own practice.  One reason comes 
from the idea that the caller will earn the attention of the dancers 
by eliminating as much non-essential information as possible from 
their comments.  This is not easy.  It involves careful construction 
of the calls and precise walk-through instructions.  It also involves 
recruiting others to make announcements and eliminating anciallary 
comments at the microphone.  The effect is to train the dancers that 
your voice always carries essential information.  (The most essential 
information is an instruction to physically move.)  In contrast, any 
non-essential information offers the dancers an opportunity to "tune 
out" the caller's voice and engage in social interaction.
I consider the name and author of the dance to be non-essential 
information.  The caller has a limited amount of "currency" in 
holding the dancer's attention.  All non-essential information draws 
down the caller's account.  That does not mean one cannot tell 
anecdotes or tell the name of a dance.  It just means that callers 
need to be careful how they use what currency they have.  If you find 
that you have difficulty earning or holding the attention of the 
dancer's you might want to replay your tape of the evening and pay 
attention to how much non-essential information you are giving 
out.  You might have over-drawn your account.
A contra dance caller needs to intersperse an evening of social 
intercourse with times when the dancers need to pay careful attention 
to the caller's voice.  Making a courteous and seamless transition 
between these two activities--without relying upon a loud PA 
system--is the mark of an excellent contra dance caller.
Another reason not to tell the name of a dance is because it carries 
the implied message that the name is important.  Most newcomers are 
likely to assume that this means that others in the hall already know 
the dance.  Some dancers may feel that they are less prepared because 
they haven't learned this particular dance previously.  This could 
create unnecessary anxiety among some of the dancers in the 
hall.  Anxiety lowers self-confidence and will make the caller's job 
more difficult.  Not announcing the name puts everyone on more of an 
equal status.
Perhaps we should consider alternatives to announcing the name and 
author of every dance.  One is to only announce the names of dances 
if the name is meaningful or entertaining.  A caller could also make 
a list of the evening's program, with the names of the dance authors, 
available to interested participants and announce this early in the evening.
I would be interested in what others think of this idea.
Regards,
Greg McKenzie