Emil also please consider following
# "send" button (mobile browser)
# send (attach) file
# smiles
# take a photo (mobile)
# group chat
# option for request / invite a person/group (labelled/tagged) to join
Great plugin, although it would be very, very, really, ultimately fantastically cool if the user would have to first log in to the chat - similar to the facebook chat, not as intrusive.
Instead of default'ly being logged in, the user would default'ly be logged out of chat and would have to click on the chat icon to log in to chat.