Actually, it wasn't us. It appears that someone, somewhere has a virus that uses the contact list or inbox messages of the infected sender to spoof its own address. Some info about it can be found here:
As a general rule, if you haven't emailed us first, we won't be emailing you. Further, none of us make a practice of sending out attachments featuring descriptions written in horribly broken English.
If you get a message claiming to be from us out of the blue, it's probably a virus.