According to the Apple notes about the 10.4.9 update to OS X, iChat AV is now compatible with USB Video Class webcams (Which means no hack is needed anymore to make USB cameras work on OS X).
Best or advised webcams are:
* The Xbox 360 webcam compatible with any Mac running Mac OS X 10.4.9. No drivers required.
* The QuickCam Ultra Vision and Fusion webcams, image quality is great, they have built in microphones and you just plug it in and it works.
* The Creative Live! cam optia should also work, but it has no mic.
The perfect companion to iChat has been updated and version 1.4.8 is now available.
iChax is indeed a compilations of features that are “missing” in iChat in a simple tab that is added to your chat client’s preferences. Main features are tabbed chatting, unread messages count in dock just like in Mail.app, you can also hide the iTunes Music Store arrow link, customize your contact list fonts and much more!
The full list of features and download link are available in Chax official site.
To chat with Google Talk on iChat?
Too easy!
1- get a Google Mail account (someone@gmail.com) thanks to an “invitation” (i actually have 15 invites, send me a mail and i’ll send you one…)
2- launch iChat and go to preferences command+,
3- add a new “jabber” account, but don’t forget to change the server name to: talk.google.com
4- go online et voilÃ
5- to add a contact just change his account (buddy@gmail.com) to buddy@talk.google.com
2 Add Ons for iChat:
1- iSmileys a package of new smileys for your favorite Chat client (compatible with MSN Messenger)
2- a very useful Add On called CHAX , once installed it will add you some new features in iChat preferences like using custom fonts in the contact list, enables auto away messages, saving windows positions and so much more!!!
I found THE website for iChat…
You’ll find here everything you need to know about iChat AV, from beginner level (how to add a buddy), to medium (configuring routers) and so much more!!
This site is USEFUL, solution for iChat errors and help are provided too…
The author is Ralph Jones. The MAN who knows everything about iChat!!!
Ralph Jones UK Frappr
For those who access MSN throught iChat (see here), you might have noticed MSN emoticons donnot appears on your screen.
So here is a HUGE collection of MSN emoticons to install for iChat and then you’ll be able to see your contacts emotions.
3 steps:
Step 1- go to my iDisk and download the iChat emoticon pack (iChat USP.smileypack)
Step 2- get from my iDisk “Emotimaker.app”
Step 3- open Emotimaker.app it will ask you for a smiley pack, just open iChat USP.smileypack
Et voilà !!!!
Thanks to Stepahne Dassieu (aka Suanko) for iChat USP.smiley
For any comment, suggestion, support… you can email him at this adress : hello(at)stephanedassieu.com
His website: Stephane Dassieu
Thanks to SimX for Emotimaker.app
You can Donate here Emotimaker.
iChat doesn’t integrates a search engine to find people to chat with, so here are some links to websites you can find iChatters in, both of the sites i’ll put here requires registration + AOL/.mac account 
iChat n’intègre pas de moteur de recherche pour trouver des personnes avec qui discuter, voici 2 liens que j’ai trouvé où vous pourrez trouver des iChatteurs, les deux sites nécessitent une inscription et un compte AOL ou .mac
Chatfinder
iChatters
You can post some other sites if you have links / Vous pouvez poster d’autres sites si vous avez les liens.
