Several library lists I receive have a series of Subject line prefixes to denote certain forms of content, such as SHARE, TAR, HIT, ADMIN, etc. That enables any recipient to set an email filter to automatically route, delete, or prioritize on any Subject keyword. EXLIBRS-L (Rare Books, Manuscripts and Special Collections librarianship) has clear rules, particularly Section VI "Commercial Activity." A practical requirement is that notices start with a "DO NOT REPLY TO THE LIST" caution. The history of that list is an interesting read as well. There are people on Exlibris, just like here, who consider commercial posts an essential resource in support of rare book librarianship, and others who consider them inappropriate. Their rules enable all viewpoints to be accommodated. https://list.indiana.edu/sympa/info/exlibris-l ARLIS-L has a different constituency, and the rules here should be tailored for the varied interests of our members. As we have seen from several recent posts, what may seem useless to a research and instruction librarian can be seen as an important resource by one for whom acquisitions/collection development is a primary responsibility. Filtering is best left to the end user. Richard On 4/16/2014 9:42 AM, Judy Donovan wrote: > I appreciate having commercial announcements on ARLIS-L. On another listserv that I belong to, they ask vendors who post "commercial" announcements to put the word AD: in the subject line. > > For example AD: Antiquarian Art Publications. That way it is easy to note which postings are for when you are in a collection development mood :-) ~~~~~~~~~~~~~~~~~~~~~~ Mail submissions to [log in to unmask] For information about joining ARLIS/NA see: http://www.arlisna.org/join.html Send administrative matters (file requests, subscription requests, etc) to [log in to unmask] ARLIS-L Archives and subscription maintenance: http://lsv.arlisna.org Questions may be addressed to list owner (Judy Dyki) at: [log in to unmask] ~~~~~~~~~~~~~~~~~~~~~~