I only say 'little' because they'd like pieces of just 25 words, even less if you like.
I like that they ask not for stories with a beginning, middle and end, but say:
We want stories we can read again and again and never tire of. Stories that don’t pull any punches. Stories that make us think, that evoke some kind of emotional response.
'Hint Fiction' is the name for such small wonders, and when they're done right, they really are wondeful (check out the previous winners for a flavour).
Closing date is end of August, and it's free to enter. You can send 2 pieces of Hint Fiction, or 3 - if you put a link to the website on your blog (like I just did), or your twitter thing if you do that twitter thing.
100-150 of the winning and commended stories will be published in an anthology.
I'm just about to email mine (an entire 22 days before the closing date. See, I may have learnt a lesson this week.).