Does iMessage on a iphone5s use much internet?

Just wondering if it's true that iMessages on a iPhone use a lot of internet? I'm
With Telstra $100 a month for unlimited text and free calls on weekend and after 7pm weekdays and get 2gig of data

IMessaging in the uk uses Wi-Fi so does not use data allowance. It must be the same in your country?

IMessage works in the same fashion everywhere. It requires internet connection via Wi-Fi or 3G for it to work. I would assume that it will use minimal data if you don't send/receive a lot of videos and pics. However try to use Wi-Fi wherever possible and do turn off 3G when in Wi-Fi.