Retweet vs email forward

Awhile ago, Anil Dash (http://twitter.com/anildash) tweeted..

"It's an interesting accident of history that we consider sharing tweets "retweeting" instead of "forwarding", like in email. RT = FWD?"

This annoyed me on two levels:

• It made me think
• I disagreed, but couldn't pin down why

Upon further reflection (to the degree I can execute that) I still do not think they are the same thing. Why? Well, best I can come up with so far is:

• There is a stronger validation with a retweet than a forward
• My email address book and Twitter follower lists are not identical, and there is a reason for that
• The act of retweeting is more public - those beyond my lists (followers or email) can be exposed to the content I resurface