Criticism is good thing. It even helps me to see my product clearly)

So let's see 1. Taku is not just a chat popup window. You don't talk with only one user at a time. You have constant connection with all users. 2,3. Notifications won't be always on screen. Only when there is a new message. And yeah I'm thinking about enabling "Mute" for users who don't want to be annoyed)