Email: Yahoo Support

I was signed into Yahoo [Messenger] and the following link was sent immediately before the person I know slightly signed off (giving the impression it was sent [in bulk] as spam):

[...] www.geocities.com/xxx_welcome_2006_xxx [...]

The link brings up a site that looks like Yahoo Photos and asks for [my] password while I was logged in. The source coding looks suspicious too. Is this a known exploit that Yahoo users should be alerted to?

[Note: Here is the correct link for Yahoo Security.]