What do you think about this income report (chat app)

What kind of software are you running? Did you write the server side yourself?
If you did not write the server side yourself and it is an open protocol, perhaps there are better alternatives that scale better? (Apache vs. Nginx for example)
I would go with Amazon EC2 and set up a small instance (64-bit one) which can be scaled up in a mater of seconds. With the right software and configuration I think a single EC2 instance will go a long way.

Yes I wrote the server side code, using Red5, also interested in Amazon EC2 but not familiar with the setup or deployment, I need to read more about it, thanks.