I think it ends on the 3rd of Feb as it was started on the 24th of Jan.
As per the GFY rules contests can't run for more than 10 days
From
http://bbs.gofuckyourself.com/gfy_faqs.html
1. No 'most posts in a thread contests'. Max 100 posts in a thread by one person.
2. No one registered in less than 60 days before can post in a contest thread.
3. Contests can't run more than 10 days. And no more than 3 contests at a time. And since only top advertisers can run contests, you need to coordinate with Eric BEFORE starting a contest.