Pro - Easy to do from anywhere in the building. Big messages not a problem. Electronic messages are easy to delete. Con - Won't be able to strip .signature files from the end of messages. Requires users have access to e-mail.
Electronic messages are easy to delete.
Pro - No problem with signatures. Con - Requires that users remember command exists. Requires an account and the ability to create a file on Unix. Requires Dean read e-mail. Pro - Hard copy made of suggestions.