IGNORE THE ATTACHMENTS!
The "attachments" that are sent via listserv correspondence USUALLY are
nothing more than promos for something. They "leach" onto your listserv mail
and serve the purpose of some commercial venture. That is why so many
companies offer listserv service free. This is a regular event with YAHOO
listserv mail. Just ignore it. However, if you are send a REAL attachment, it
would be advisable to note that in the text of the email or better
yet....send it directly to the people who want the attachment. Otherwise,
read the email and close it. It is best just to forget it has an attachment
(legitimate or otherwise).
Ph.D. Student, Educational Technology