Google Wave, which has been described as a "personal communication and collaborative tool," is Internet-based software program that allows you communicate with others. Google Wave is a combination of instant messaging, e-mail, social networking and wikis all in one.
Each new conversation is called a "wave" and can include multiple contacts. The "waves" happens in real time, and users can see what each other is typing as it is being written. When you are within a "wave," the messages are threaded (the whole conversation is viewable in bubbles that show your user name and the other users' names). While in the conversation, you can always go back and edit previously submitted messages. The "wave" also allows you to add extensions and widgets. Some of the widgets that can be added are "6 Rounds," which is a video-conferencing extension, and a "Yes, No, Maybe" application that allows you to do a guest list. You can also add an extension that allows you to tweet from inside the Google Wave program and you can add pictures, maps and other documents into your wave conversations.
Google Wave cannot be used with Internet Explorer Web browser, but it can be used with Mozilla Firefox, Safari or Google's Web browser, Google Chrome.
I think this program can be useful for PR practitioners in that you are able to organize, meet and share documents with others when you are away from the office.
You can find out more information at wave.google.com