Please read the message at the bottom of the announcement. If you feel your article was missed and you did not plagiarize, send @OriginalWorks a memo with a link to your post and a note regarding the issue. The memos are dealt with in the order they are received.
EDIT: Your article was assessed to have word spinning. In the future, if you wish to participate in a writing contest, please ensure that the work is your own. Word spinning is treated the same plagiarism.