No one expects you to speak for your institution, but it is helpful to put your posting in context. If you are a vendor to the respiratory care community, identify your company. If you are a health practitioner, place your credentials and current affliation after your name. IF you have a problem with that, send me your story or posts and I will consider posting the note without your identifying information. Respect your readers's needs.
Many abbreviations are regional.
Many people use the search features of this listserver to look up information provided to readers. If someone is having trouble complying with these requests, please tell them privately. If I tell you, I will have either been in a cranky mood or, more likely, have made a judgement that your behavior is not accidental, occassional, or neglectful, but rather consistent, blatent, and willful. How to sign off in ways that identifes me, yet maintains a degree of privacy. If someone wanted to find me, they could with a call to directory assistance.