At Pat's Fantasy Hotlist you can currently enter to win an autographed copy of Gail Z. Martin's The Blood King: Book two in the Chronicles of the Necromancer.
You need to send an email at firstname.lastname@example.org with the header "BLOOD." Second, your email must contain your full mailing address (that's snail mail), otherwise your message will be deleted. Lastly, multiple entries will disqualify whoever sends them.
There's no mention of an end date.