Over at Jesus Creed, Scot McKnight offers keen advice to frame discourse in Emerging/Emergent disscussions. He suggests a kind of scholarly precision when referring to "Emerging" or "Emergent" and really asks those who choose to publicly comment on these matters to do their homework and read up on the movement. The literature is expansive and growing, and tracking the conversation/movement in the blogosphere is a must.
I would also suggest that one consider attending a church/community that embraces the "label" Emergent/Emerging in order to enhance one's participation in the discussion and get a sense of how these communities enact the Christian faith. Aaron Flores's fine M.A. thesis on the Emerging church has a long list of these communities.