You clicked on an invalid link which probably means someone is trying to trick you to go to a site and enter your Bebo username and password.
NEVER enter your Bebo username and password into any site that does not have http://www.bebo.com in the browser's address bar.
There may be all sorts of enticing offers like 'this is the bebo staff admin screen, enter your username and password and you'll be able to sign into any members account'. Trust me, you won't.
The 'fake' sites will also probably look just like Bebo, that doesn't mean it is Bebo, the URL must match perfectly.