Eliminate E-mail?

http://alumni2.wordpress.com/2007/08/10/will-facebook-replace-email/
http://www.mappingtheweb.com/2007/07/11/facebook-email/

A path to legitimately eliminate enterprise e-mail with the Social Graph and Unified Communications.

The key is to have a transition strategy that indicates the type of communicates and properly escalates between the modes of interaction:

1) Paper.
2) E-Mail.
3) Instant messaging.
4) Audio/Voice.
5) Video.

Application of context to any of these channels creates "ambient findability" based on the social graph and the level of interaction.