that looks awesome that should be integrated into some cms systems(4images, drupal, joomla)
it looks a lot like meebo and could use a few improvements but its interesting as i've never seen an ajax chat as sophistocated as this and for free. i hope to see this advance and get more exposure and i hope someone figures out how to combine the user names of a certain cms to be used in this with the same names.
to sum it up: good job