Help!

Q u o t e:
I recently got a mail while playing WoW saying i was chosen to test cataclysm and i would get a manta or something and that i should go <removed> A few hours after i logged i received an e-mail that said i changed my password and now i can't log in but i'm still able to use my account

The website you visited was a phishing website designed to scam players, Legindary,

I can confirm the password was changed from the malicious party recently. You may wish to access Battle.net Account Management from a secure computer and reset your password quickly. You may also consider changing the password to your email address as well, just to be safe.

Battle.net Password Retrieval:
https://us.battle.net/account/support/password-reset.xml

In the future, do not post the link of the malicious website. We do not want other players to be curious and visit these sites.

Good luck!