Method to stop trash with postings?

This list is a wonderful source of information and contacts.
I receive the digest version and have noticed that there is more and more junk lines attached to some emails.

Below is a sample of the lines I means.
In one emails there were 10 copies of these attached to a small notice.
Is there a ways to prevent these?

The lines are like:
......................................................
Useful links for the Yahoo!Groups Vantage Board are: ( Note: You must
have
already linked your email address to a yahoo id to enable access. )
(1) To access the Files Section of our Yahoo!Group for Report Builder
and
Crystal Reports and other 'goodies', please goto:
http://groups.yahoo.com/group/vantage/files/.
<http://groups.yahoo.com/group/vantage/files/.>
<http://groups.yahoo.com/group/vantage/files/.
<http://groups.yahoo.com/group/vantage/files/.> >
(2) To search through old msg's goto:
http://groups.yahoo.com/group/vantage/messages
<http://groups.yahoo.com/group/vantage/messages>
<http://groups.yahoo.com/group/vantage/messages
<http://groups.yahoo.com/group/vantage/messages> >
(3) To view links to Vendors that provide Vantage services goto:
http://groups.yahoo.com/group/vantage/links
<http://groups.yahoo.com/group/vantage/links>
<http://groups.yahoo.com/group/vantage/links
<http://groups.yahoo.com/group/vantage/links> ">http://groups.yahoo.com/group/vantage/links>

ETC. ETC. ETC.

=============================================
Babette Welch
MIS Director
Argonics
1110 Wright
Marquette MI 49855
906.226.9747 ext 235
906.228.0951 fax



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