You can submit a respone to a challange or you can add your own challenge. Its up to you. Simply add a link to the page with the code you want the HTML5 or Flash guys to replicate! Let the rounds begin.
If you submit a challenge and it is acepted it will be added to the dropdown list. Keep all challenges with 2-4 hours deleopment time and cross browser (IE9, Chrome, Firefox and Safari). Be ready to submit your code and assests if requested