The Flash Fiction Press - Open for Submissions

The Flash Fiction Press is an online site that publishes flash fiction of 100 to 1200 words in any genre.  Also once a week they publish a short story of 1200 to 5000 words.  Payment here is $3 for flash and $5 for shorts.  You can find the details here.  There are stories already published on the site so you can get a feel for what they're looking for.