“Yes, friends, the time is near — for you to put your money where your
instinct for rambunctious irreverence is. January 31 is your final day
to register as a member of Sasquan,
the 73rd World Science Fiction Convention. Of course, you don’t have
to be a Sasquan member to participate in the Hugo award voting and
nominations. You can also be a member of either Loncon 3 (last year’s
Worldcon) or MidAmeriCon II (next year’s Worldcon.) If you have a
membership for any of these, you’re good to go for the Hugo nomination
period.”
Thus spake Brad Torgersen, Cuddly Token Liberal, Evil Legion of Evil. There are more details on his site.