In preparation for something a bit longer soon to come, here are some point that I've been thinking about concerning identity projection.

-Participating in a social network requires the selective projection of identity.
-What is projected depends on the perceived value within the network.
-This value seems to be determined both by the structure and collective character of the network.
-The most basic message at the heart of any projection is "I am here."

There are a couple posts that deal with related issues:
Fading Waypoints - Tag Along
EconoMeta - Is Attention the Opposite of Anonymity?