On the subject of sharing speakers' presentations, several people have made
very valid points. There is a great deal available to genealogists without
the need for the individual societies to become involved.
Many conferences have their full programs posted online.
On the IAJGS website - http://www.iajgs.org/
the lectures for past
conferences are listed and many audio recordings can be ordered at very
There is also a number of available tapes for the National Genealogical
Society (or equivalent in a particular country) and the Federation of
Genealogical Societies (please check their websites for details).
JGS of Montreal, Programming