The Chat window is used to send and receive chat messages. Messages that are entered in the Chat window are sent to the destination via the chat server. This means that chat sessions are not only between a controller and an agent, but also between controllers and between agents.

Online chat may refer to any kind of communication over the Internet that offers a real-time transmission of text messages from sender to receiver. Chat messages are generally short in order to enable other participants to respond quickly.

There have been scattered reports that many PS2 games aren't working properly with the PlayStation 3 in Japan, but firmware updates are being produced to alleviate these issues. Ultimately Sony's goal is 100% backwards compatibility, although we haven't yet seen a running compatibility list.