I was talking this morning with my favorite Gen Y trend observer. She remarked, "All my friends are moving to Google Chat. Nobody I know uses Instant Messenger anymore. They all have moved." She went on to say that they signed up for Gmail accounts at first just to get chat, but that once they got to using it they eventually switched over to Gmail as well.
Very interesting. Another data point confirming what I had noticed myself: People leaving AIM for Google Talk and Facebook?