I want to make this facebook application for enjoy developing and show to a lot of people the power of Flex Framework working in social place with Cocomo, but not for commercial purpose them this is the reason becacuse I cant think in monetization plans or timelines..... (if you refering to buy some...

I want to do a facebook application (multiplayer online game) with flex, and I will use cocomo platform.My question is:What happents y a lot of people (more than 500) want to play the game a same time????I condider that my game will have rooms, every room with max 20 people but there are lot of room...

I cant understand something about the "limits to usage".In the faqs say that can have max 25 concurrent users but if a need to do simple chat with more that 25 people chating.... I cosider that in my chat will be more that 100 people chating at the same time.then what I have to do??