There's a thread
here for contests too.
poet, I wasn't allowed into that thread you linked to. *sigh*
So I'm posting this poetry contest here; it's not free, and it';s only for women, but it's only £5 which is less than $10 US for five poems, and you can enter as often as you like.
http://www.mslexia.co.uk/menu/stop_press/poetry_comp.html
It's for women of any nationality and any country, and the first prize is £1000, about £2000 US, and it and all the runner-ups wil be published in Mslexia magazine.
Edit to say: though I couldn't get to that post through the link, I got to it from the thread list. Crazy forum you have here!
More details in this post.