Netiquette :  How not to annoy people via e-mail....

• Don't be that dummy who piles spam atop spam by replying all
• Remember that work and personal e-mails are not interchangeable
• Delete all the headers in the body of your e-mail so the relevant material is at the top 

  So you've just encountered a warning about the health risks of paintballing or a series of photos of albino dolphins, and you absolutely must forward it on. As we've noted, you should begin by really asking yourself if your recipients care to see this.

But if you're going to send away, you rebel you, at least do your hapless recipients the courtesy of deleting the equivalent of phlegmy throat-clearing: lines upon lines that look something like this (ahem):
Begin forwarded message:
From: [an e-mail address you don't know]
Date: December 26, 2011 11:24:10 AM CST
To: [approximately 18 lines of e-mails you don't know]
Subject: Fwd: Fwd: Fwd: YOU'VE GOT TO SEE THIS!!
-----Original Message-----
From: [another random yahoo you don't know]
To: [another half-page of e-mail addresses]
Sent: Sat, Dec 26, 2011 7:27 am
Subject: Fwd: Fwd: YOU'VE GOT TO SEE THIS!!
Unbelieveable, definitely read and forward on, what a joy.
...ad infinitum.

Delete all the headers in the body of your e-mail so the relevant material is at the top of the e-mail. Clean up that subject line so it doesn't start on a stuttering F-sound.

In short, give your contacts one less reason to hate you, and maybe they'll take that life-is-all-about-beautiful-relationships chain e-mail to heart.
Read more  :   http://edition.cnn.com/2012/02/01/tech/web/group-emails-netiquette/index.html?hpt=hp_c2