"Kojak" has told me that he has suffered something similar.
The messages to our website seem ONLY to be going to the e-mail address which is linked to the main menu.
The virus is a "worm" known as w32.KlezH@mm and it infiltrates your address book and sends itself to everyone in it. Fortunately, I have a policy of NEVER opening unsolicited attachments together with constantly updated anti-virus software, so the "worm" hasn't infected my own PC.
However, if you have been less fortunate, the undermentioned website gives advice on how to deal with the problem: