Ok, so all of you folks that I have talked to over the years that don’t use Yahoo! Messenger because all of their friends are on MSN no longer have any excuses. Yahoo! Messenger/MSN Messenger interop is finally here. Go to Messenger.yahoo.com (or some MSN link that I can’t recall) and sign up for the interop beta.

For those of you that are already using the Messenger 8 beta, you will still need to go to the messenger site to sign up. Once added to the interop beta, you will be asked to sign out, then sign in again. At that point you can start adding your MSN contacts.

For you Flash users out there, now is the time to sign up for Yahoo! Messenger. While the interop goes both ways, it is much better to have a Y! account and interop with the MSN folks rather than vice versa. With a Yahoo! account and Y! Messenger client, you can build Flash plugins of your own. So come on over and support the messenger client that actually uses Flash.