Speeding Star is a new imprint from Enslow Publishers, Inc. They're looking for stories that will appeal to boys from third grade through high school written at a fourth grade reading level. Stories should be 5000 to 12,000 words in the genres of adventure, mystery, sports, or fantasy. There's no mention of payment. You can find more details here.
One thing that surprised me was that they didn't want work submitted by agents.
Hat tip to Cindy Meyers! Her post today has quite a few good markets so be sure to click on over.