Have you ever wanted to quickly send a file to a friend who’s online? Now you can share pictures, documents and other files directly with your friends while chatting in iGoogle and orkut, without having to switch to email to send the file as an attachment. File transfer works directly in the browser so you don’t need to install anything. Just start a conversation with a friend and click “Send a file…” in the “Actions” menu. After you select a file, your friend will be asked if they want to accept the transfer. You can learn more on the Google Talkabout Blog.
You might have noticed that Google recently gave iGoogle and orkut chat a face lift. Several tools now have a new home at the top of the chat window. From the new toolbar, you can click the blue camera 
and phone icons 
to start video and voice chats with your friends or the group chat icon 
to add additional friends to a text chat. If you’ve never used video or voice chat before, all you need is a webcam and microphone attached to your computer and a small plugin application available for free at www.google.com/chat/video.
Google is working to bring file transfer and the new toolbar to Gmail too. In the meantime, you can continue to access voice, video and group chat in Gmail from the “Video and More” menu in a chat window.