FEDORA net etiquette

[Joachim Backes]

Until tomorrow, I always sent signed emails to the FEDORA mailing list,
where the signature was issued by the PKI of my computer center (german 
university). But some fedora list people told me that even very small 
emails always have a size of at least 8 kilobyte.

Therefore i switched to unsigned emails.

My question: are there rules for the fedora email traffic saying: do not 
use signatures?