Hi,
Face Time = 1-1 Video Chat between iOS 4 and above devices and Mac with the Mac Version of Face Time.
iChat = and Instant Message app that can join the AIM, Jabber (this included Googletalk and Facebook) and Yahoo Services as well as doing LAN based Bonjour Chats.
Can also do Audio Only and Video Chats to Buddies on the services above if they are using iChat.
In addition to this is fully compatible with AIM or Trillian Pro on a PC.
There's More.
Can send File and Pics as File Transfers.
Can Send Pic-in-chat when a Pic is dragged to the Text sending field and sent it displays In line in the chat and is scalable..
Does a similar job if you drag a Pic to the Video Chat window where it can replace the Video feed.
iChat Theatre formalizes this even further playing files so that Movies and Presentations or Documents can be displayed as the Feed.
This includes a Link to iPhoto to display individual Pic or Slide shows (Turn the Music off first).
Can Play the same Video Effect and Backdrops that Photo Booth can.
iChat can do 4 Way chats in Video and 10 Way in Audio Only (you are one of these)
Think of Captain Kirk on planet to Enterprise with Communicator for Face Time (But with Pics)
iChat is more like full subspace communication with StarFleet.
Both Face Time and iChat are Peer-to-Peer in Video and Audio Chat.
In the case of iChat this means you can log out of a Buddy list and still continue the chat as it is between just you and your Buddy(s)
Skype does what it says.
However some would say it is about the way it does what it does that is the Issue.
Run Little Snitch if you are going to use Skype and limit the number of connections it makes. (it does not use a central server (Other than the name database) and share lots of people's connections.
8:36 PM Saturday; October 22, 2011
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb( 10.6.8)
Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images." No, Seriously