I'm assuming you have been away from the boards for a while. This has been the main topic on conversation recently.
For more info here are two places to visit.
IMPA who are organising the defense and
Fight The Patent who are organising the search for "Prior Art" and keeping people informed.
But don't be frantic about it, they sent out 1,000s of those packages. Even sent one to my US corperation that does not own or run our sites. Just stuck the name up on the site for a few weeks to get a merchant account. If they ask nicely I will give them 50% of the corporation turn over. What is 50%of nothing?