Skype is a very popular solution for free audio and video chatting and instant messaging.
Skype has very detailed release notes if you are so inclined. This latest update adds a bunch of fixes for Snow Leopard. Version 2.8 also included Skype Access, which is a pay as you go public Wi-Fi service based on the Boingo network. Version 2.8, originally released in July, included features like screen sharing & improved audio codecs that had been around in the Mac beta and the PC version of Skype for awhile. The release date is listed as September 17. It's a micro update of the summertime release of Skype 2.8 the version number is now up to 2.8.0.722. Skype 2.8, with hot fixes for Mac OS X 10.6, is available for your downloading pleasure.
