It's a popslash story challenge, with the only real requirement that the stories have (in 2006) some kind of dragon, literal, figurative, metaphorical or, um, whatever other kind there might be. In 2007, I expanded it so that people could have dragons and/or dwarves. And I'm not sure which prompt to add this year... Have a look at my 'dragon challenge' tag for more detail.

Signups start on St George's Day because of the obvious dragonish connection, and the stories have to be with me by June 5th, as they go live on June 6th, which is D-Day (and also, my birthday) and therefore appropriate. :-)

The stories from both years are on my website, here, and a very gratifying set of stories they are, too.