I had heard this news the other day via Katherine Tomlinson, but decided to wait until a post went up officially. It is with a sad heart that I have to report that Thrillers, Killers, 'n' Chillers is closing their door to submissions. On the bright side TKnC editor, David Barber, is setting up a new site called Thrills, Kills, 'n' Chaos. This site will be open for flash up to 1000 words only, and as with the original TKnC it is a non-paying market. They are currently closed to submission but I'll let you know when they open up.
To the editors of TKnC, thanks for all the great stories!! You will be missed.