Simplify the following text for a Grade 5 native English-speaking person.
Original: Because the clientâ `` server design allows for a centralized Mibbit client server , Mibbit is able to offer extended functionality which is not present in the standard IRC protocol . Some of these extensions include a channel chat buffer that can be shown to Mibbit clients when they join a channel where another Mibbit user is already present , a notification for other Mibbit users that you are typing a message to them , and distinctive icons that allow identification of the device used with Mibbit such as an iPhone , iPod Touch , Wii , etc.
Simplified: Mibbit is an online IRC client that is free of charge .