Link to Sophos security blog:
http://www.sophos.com/blogs/gc/g/2009/02/25/gmail-users-hit-viddyho-phishing-chat-attack/

"he unsolicited messages urge Gmail users to "check out this video" by clicking on a link via the TinyURL service. The link, however, directs users to a website called ViddyHo – which asks surfers to enter their Gmail usernames and passwords.
...."

"2/24/2009
Please be very careful when asked to enter your Google username or password after clicking on links sent to you from Instant Messages. We've seen a number of reports from users who've received links appearing to be from friends that ask them to enter their Google Talk or Gmail username and password into a website called ViddyHo.com. If you have entered your username and password in this way, we are asking you to change your Google Account password and update your security question for account security. To learn how, see our help center article on changing your password."
=> http://www.google.com/support/talk/