About iChat
iChat is an Instant Message and Video and Audio only chat application.
It uses the AIM Service as the Text message part but from version 3 onwards can also join Jabber servers including GoogleTalk.
It can send Files and Pics to other iChat Users and in certian circumstances the Pics are displayed in the Chat window.
In later versions it can have add-ons that enhance video features that have then been somewhat included by Apple in Version 4
