[Spyckie]

"Seeing you type" is the same thing as talking - only introverts don't like other people seeing their thoughts, while extroverts prefer it. The thing is, extroverts comprise the majority of the population. Also, while seeing you type may not be preferred in conversation, it will be preferred in a document collaboration environment.

The robot thing is not inane because it is part of the distributed/federated document editing, and it has media elements attached to it rather than just text. In IRC, you only talk to people for the most part, so bots in IRC are centered around facilitating that purpose. With Wave, you talk, work, and plan with data that can take any form - a much broader scope that allows robots to do much more than just 'user logged in, user logged out'.

The reason why I think it is a strong alternative to project collaboration tools is because of 'see as you type' and its robot capabilities. Yes, it has a nice document model, but that isn't the key feature for me.