this is really odd:
i have a contact-us page with coments disabled.
every time i create a post ending with a link to the contact-us page, there will be a comment on the contact-us page (comments disabled) with the name of the blog, no email and the post's URI, and the body of the comment will be "[...] hyperlink_name [...]"
i also have to say that we're using the rich visual editor, (ms-office writters)