(noun) Automated system emails of importance that are better than SPAM. Bacn is not SPAM.
Bacn consists of the following: MySpace friend requests, PayPal payment receipts, electronic bills, email list digests, twitter follow messages, etc.
Origin: PodCamp Pittsburgh 2, Pittsburgh, PA, August 18-19, 2007.
I set up bacn filters to separate email from real people. My bacn email folder is checked once a day for important information about me.